Cognitive Function Products

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This monograph is intended to serve as a guide to industry for the preparation of Product Licence Applications (PLAs) and labels for natural health product market authorization. It is not intended to be a comprehensive review of the medicinal ingredient.

Notes

Date

April 26, 2024

Proper name(s), Common name(s), Source information

Table 1.1. Proper name(s), Common name(s), Source information for ingredients with nervine action
Proper name(s) Common name(s) Source information
Source material(s) Part(s) Preparation(s)
Anemone pulsatilla
  • European pasqueflower
  • Pasqueflower
  • Pulsatilla
Anemone pulsatilla Herb top Dry1
Avena sativa
  • Common oat
  • Oat
  • Red oat
  • Side oat
  • Tree oat
Avena sativa
  • Seed
  • Herb top
Dry
Hypericum perforatum
  • Goatweed
  • Hypericum
  • St. John's wort
  • St. John's-wort
Hypericum perforatum Herb top Dry
  • 5-Hydroxy-L-tryptophan
  • L-5-Hydroxytryptophan
  • L-5-HTP
  • L-5-Hydroxytryptophan
Griffonia simplicifolia2 Seed N/A
Saccharomyces cerevisiae Whole cell for biosynthesis N/A
Escherichia coli Whole cell for biosynthesis N/A
Nepeta cataria
  • Catmint
  • Catnep
  • Catnip
  • Catswort
  • Field balm
Nepeta cataria Herb top Dry
Matricaria chamomilla
  • Blue chamomile
  • Chamomile
  • Common chamomile
  • German chamomile
  • Hungarian chamomile
  • Matricaria
  • Scented chamomile
  • Scented mayweed
  • Sweet false chamomile
  • True chamomile
  • Wild chamomile
Matricaria chamomilla Flower Dry
Melissa officinalis
  • Balm
  • Bee balm
  • Lemon balm
  • Melissa
Melissa officinalis Herb top Dry
Panax quinquefolius
  • American ginseng
  • Occidental ginseng
  • Sang
  • Shang
  • Xi yang shen
Panax quinquefolius Root Dry
Scutellaria lateriflora
  • Helmet flower
  • Hoodwort
  • Mad-dog scullcap
  • Quarter bonnet
  • Scullcap
  • Skullcap
  • Virginian skullcap
Scutellaria lateriflora Herb top Dry
Stachys officinalis
  • Bishop's-wort
  • Purple betony
  • Wood betony
Stachys officinalis Herb top Dry
Tilia cordata
  • Linden
  • Littleleaf linden
  • Small-leaf European linden
  • Small-leaf lime
  • Small-leaf lime tree
  • Small-leaf linden
  • Tilia
Tilia cordata Flower Dry
Tilia platyphyllos
  • Big-leaf linden
  • Broadleaf lime
  • Large-leaf lime
  • Large-leaf linden
  • Linden
  • Tilia
Tilia platyphyllos Flower Dry
Tilia x europaea
  • European Lime tree
  • European linden
  • Lime
  • Lime tree
  • Linden
  • Tilia
Tilia x europaea Flower Dry
Turnera diffusa Damiana Turnera diffusa
  • Leaf
  • Leaf and stem
Dry
Withania somnifera
  • Asgandh
  • Ashwagandha
  • Asvagandha
  • Winter-cherry
  • Withania
Withania somnifera Root Dry

References: Proper names: NHPID 2023; Common names: NHPID 2023; Source information: EMA 2008; Bone 2003; Hoffman 2003; Lemaire and Adosraku 2002; API 2001; Bradley 1992; Williamson et al. 1988; BHP 1983; Fellows and Bell 1970; Remington and Wood 1918; BPC 1911.

1Do not use the fresh plant (Bone 2003; Hoffman 2003; Bradley 1992; BHP 1983).

2Isolate. The source information for L-5-Hydroxytryptophan can also be synthetic.

Table 1.2. Proper name(s), Common name(s), Source information for ingredients with sedative action
Proper name(s) Common name(s) Source information
Source material(s) Part(s) Preparation(s)
Eschscholzia californica California poppy Eschscholzia californica Herb top Dry
Humulus lupulus
  • Bine
  • European hop
  • Hop
  • Hops
Humulus lupulus Strobile Dry
Passiflora incarnata
  • Apricot-vine
  • Maypop
  • Maypop passionflower
  • Passionflower
Passiflora incarnata Herb top Dry
Valeriana officinalis
  • Common valerian
  • Garden-heliotrope
  • Garden valerian
  • Valerian
Valeriana officinalis
  • Root
  • Root and rhizome
Dry

References: Proper names: NHPID 2023; Common names: NHPID 2023; Source information: Hoffman 2003; Williamson et al. 1988.

Table 1.3. Proper name(s), Common name(s), Source information for ingredients with cognitive support action
Proper name(s) Common name(s) Source information
Source ingredient(s) Source material(s) Organism group(s) Part(s) Preparation(s)
(2R)-2-(Acetyloxy)-3-carboxy-N,N,N-trimethyl-1-propanaminium inner salt Acetylcarnitine
  • Acetyl-L-carnitine arginate dihydrochloride2
  • Acetyl L-carnitine hydrochloride1
N/A N/A N/A N/A
Bacopa monnieri
  • Bacopa
  • Moneywort
  • Water hyssop
N/A Bacopa monnieri N/A
  • Herb top
  • Whole plant
Dry
  • 2-[[[(2R)-2,3-Dihydroxypropoxy]hydroxyphosphinyl]oxy]-N,N,N-trimethylethanaminium hydroxide • inner salt
  • d-Choline hydroxide 2,3-dihydroxypropylhydrogen phosphate inner salt
  • L-alpha-Glycerylphosphorylcholine
Choline alfoscerate Choline alfoscerate1 N/A N/A N/A N/A
  • Choline cytidine 5'-pyrophosphate (ester)
  • Cytidine 5'-(trihydrogen diphosphate) P'-[2(trimethylammonio)ethyl] ester inner salt
  • Cytidine 5'-diphosphocholine
Citicoline
  • Citicoline sodium1
  • Citicoline1
N/A N/A N/A N/A
Cod liver oil
  • Cod liver oil
  • Lecoris Aselli Oleum
N/A N/A Gadidae3 Liver N/A
Eleutherococcus senticosus
  • Ci wu jia
  • Eleuthero
  • Siberian ginseng
N/A Eleutherococcus senticosus N/A Root Dry
Fish oil Fish oil N/A N/A
  • Ammodytidae
  • Carangidae
  • Clupeidae
  • Engraulidae
  • Gadidae3
  • Osmeridae
  • Salmonidae
  • Scombridae
Whole N/A
Ginkgo biloba
  • Ginkgo
  • Ginkgo biloba
  • Maidenhair tree
  • Baiguo
  • Icho
N/A Ginkgo biloba N/A Leaf N/A
Panax ginseng
  • Asian ginseng
  • Chinese ginseng
  • Hong shen
  • Korean ginseng
  • Korean red ginseng
  • Oriental ginseng
  • Panax ginseng
  • Red ginseng
  • Ren shen
N/A Panax ginseng N/A
  • Root
  • Rootlet
Dry

Phosphatidylserine

Phosphatidylserine

N/A Helianthus annuus 2 N/A Seed N/A
Phosphatidylserine-enriched soy lecithin1 N/A N/A N/A N/A
Phosphatidylserine1 N/A N/A N/A N/A
Rhodiola rosea
  • Hong jing tian
  • King's-crown
  • Rhodiola
  • Roseroot
N/A Rhodiola rosea N/A
  • Root
  • Root and rhizome
Dry
Schizochytrium spp. Schizochytrium Oil N/A Schizochytrium spp. N/A Whole N/A
  • (S)-alpha-Amino-4- hydroxybenzenepropanoic acid
  • L-Tyrosine
  • L-Tyrosine
  • Tyrosine
  • L-Tyrosine ethyl ester1
  • N-Acetyl-L-tyrosine1
N/A N/A N/A N/A
Withania somnifera
  • Asgandh
  • Ashwagandha
  • Asvagandha
  • Winter-cherry
  • Withania
N/A Withania somnifera N/A Root Dry

References: Proper names: NHPID 2023; Common names: NHPID 2023; Source information: NHPID 2023; Yurko-Mauro et al. 2010; Calabrese et al. 2008; Bone 2003; De Jesus Moreno Moreno 2003; API 2001; Parnetti et al. 2001; Barbagallo et al. 1994; Parnetti et al. 1993; Canal et al. 1991.

1Synthetic

2Isolate

3For cod liver oil and fish oil, the species common name can be listed as source information on the label instead of the organism group. Fish oil corresponds to oil from the whole body of one or more of species of the families listed in the table in its natural and/or concentrated triglyceride/triacylglycerol form and/or its concentrated esterified form.

Table 1.4. Proper name(s), Common name(s), Source information for caffeine and ingredients containing caffeine
Proper name(s) Common name(s) Source information
Source ingredient(s) Source material(s) Part(s) Preparation(s)
  • 1,3,7-Trimethylxanthine
  • 3,7-Dihydro-1,3,7-trimethyl-1H-purine-2,6-dione
Caffeine
  • Caffeine1
  • Caffeine citrate1
N/A N/A N/A
N/A Camellia sinensis2 Leaf N/A
N/A
  • Coffea arabica2
  • Coffea canephora2
Seed N/A
N/A
  • Cola acuminata2
Seed N/A
N/A
  • Ilex paraguariensis2
  • Ilex guayusa2
Leaf N/A
N/A
  • Paullinia cupana2
Seed N/A
N/A
  • Theobroma cacao2
Seed N/A
Ilex paraguariensis
  • Brazilian tea
  • Mate
  • Paraguayan tea
  • Paraguay tea
  • St Bartholomew's tea
  • Yerba mate
N/A Ilex paraguariensis Leaf Dry
Paullinia cupana Guarana N/A Paullinia cupana Seed Dry

References: Proper names: NHPID 2023; Common names: NHPID 2023; Source information: EMA 2013; ESCOP 2009; Bradley 2006; Kennedy et al. 2004; Taylor 2003; Barnes et al. 2002; BHP 1983.

1Synthetic

2If caffeine is sourced from Camellia sinensis, Coffea arabica, Coffea canephora, Cola acuminata, Ilex paraguariensis, Ilex guayusa, Paullinia cupana or Theobroma cacao, it must be isolated and purified. Extracts of Ilex paraguariensis and Paullinia cupana must be represented separately. This monograph does not support extracts of Camellia sinensis, Coffea arabica, Coffea canephora, Cola acuminata, Ilex guayusa or Theobroma cacao.

Table 1.5. Proper name(s), Common name(s), Source information for ingredients with action
Proper name(s) Common name(s) Source information
Source ingredient(s) Source material(s) Part(s)

4-Aminobutanoic acid

  • GABA
  • gamma-Aminobutyric acid
N/A Lentilactobacillus hilgardii2 Whole cell for biosynthesis
N/A Levilactobacillus brevis2 Whole cell for biosynthesis
N/A Laminaria japonica2 Whole
4-Aminobutanoic acid1 N/A N/A

  • L-Theanine
  • N-Ethyl-L-glutamine

L-Theanine

N/A Camellia sinensis2 Leaf
L-Theanine1 N/A N/A

References: Proper names: NHPID 2023; Common names: NHPID 2023; Source information: Kanehira et al. 2011; Abdou et al. 2006; Yamakoshi et al. 2006.

1Synthetic

2Isolate

Table 1.6. Proper name(s), Common name(s), Source information for ingredients with adaptogen action
Proper name(s) Common name(s) Source information
Source material(s) Part(s) Preparation
Asparagus racemosus
  • Shatamuli
  • Shatavari
Asparagus racemosus Root Dry
Astragalus membranaceus
  • Astragalus
  • Huangqi
  • Huang qi
  • Membranaceus milk vetch
  • Membranous milk-vetch
  • Milk vetch root
  • Mo jia huang qi
Astragalus membranaceus Root Dry
Eleutherococcus senticosus
  • Ci wu jia
  • Eleuthero
  • Siberian ginseng
Eleutherococcus senticosus
  • Root
  • Root and rhizome
Dry
Ganoderma lucidum
  • Ganoderma
  • Ling zhi
  • Reishi
Ganoderma lucidum
  • Cultured mycelium
  • fruiting body
  • Mycelium
Dry
Glycyrrhiza glabra
  • Guang guo gan cao
  • Licorice
  • Liquorice
Glycyrrhiza glabra
  • Root
  • Root and stolon
Dry
Ocimum tenuiflorum
  • Holy basil
  • Rama tulsi
  • Sacred basil
  • Tulsi
Ocimum tenuiflorum Leaf Dry
Panax ginseng
  • Asian ginseng
  • Chinese ginseng
  • Hong shen
  • Korean ginseng
  • Korean red ginseng
  • Oriental ginseng
  • Panax ginseng
  • Red ginseng
  • Ren shen
Panax ginseng
  • Root
  • Rootlet
Dry
Panax quinquefolius
  • American ginseng
  • Occidental ginseng
  • Sang
  • Shang
  • Xi yang shen
Panax quinquefolius Root Dry
Rhodiola rosea
  • Hong jing tian
  • King's-crown
  • Rhodiola
  • Roseroot
Rhodiola rosea
  • Root
  • Root and rhizome
Dry
Schisandra chinensis
  • Chinese Magnoliavine
  • Schisandra
  • Wu wei zi
Schisandra chinensis Fruit Dry
Tinospora cordifolia Guduchi Tinospora cordifolia Stem Dry
Withania somnifera
  • Asgandh
  • Ashwagandha
  • Asvagandha
  • Winter-cherry
  • Withania
Withania somnifera
  • Root
  • Whole plant
Dry

References: Proper names: NHPID 2023; Common names: NHPID 2023; Source information: Upton 2012; Winston and Kuhn 2008; Winston and Maimes 2007; WHO 2004; Bone 2003; Hoffman 2003; Thomsen 2002; Williamson 2002; API 2001; Blumenthal et al. 2000; Upton 1999; WHO 1999; Bradley 1992; BHP 1983.

Table 1.7. Proper name(s), Common name(s), Source information for complementary ingredients
Proper name(s) Common name(s) Source information
Source ingredient(s) Source material(s) Part(s) Preperation(s)
[5R-(5alpha,9beta, 11E)]-5-Amino-11-ethylidne-5,6,9, 1-tetrahydro-7-methyl-5,9-methano cycloocta [b]pyridine-2(1H)-one Huperzine A Huperzine A1 Huperzia serrata2 Whole plant Dry
7,9-Dihydro-1,3,7,9-tetramethyl-1H-purine-2,6,8(3H)-trione Theacrine Theacrine1 Camellia sinensis2 Leaf Dry
Theobroma grandiflorum2 Fruit Dry
  • 3,7-Dihydro-3,7-dimethyl-1H-purine-2,6-dione
  • 3,7-Dimethylxanthine
Theobromine N/A Theobroma cacao Seed Dry
Huperzia serrata
  • Toothed club-moss
  • Toge-shiba
N/A Huperzia serrata Whole plant Dry

References: Proper names: NHPID 2023; Common names: NHPID 2023; Source information: NHPID 2023; DNP 2017; Martinez-Pinilla et al. 2015; Ma et al. 2007; Kihlman 1977.

1Synthetic

2Isolate

Route of Administration

Oral

Dosage Form(s)

This monograph excludes foods or food-like dosage forms as indicated in the Compendium of Monographs Guidance Document.

Acceptable dosage forms for oral use are indicated in the dosage form drop-down list of the web-based Product Licence Application form for Compendial applications.

Use(s) or Purpose(s)

Refer to Tables 2.1 to 2.6. below.

Notes:

Dose(s)

Subpopulation(s)

Adults 18 years and older

Quantity(ies)

Refer to Tables 2.1 to 2.7. below.

Note: Methods of preparation: Solvents allowed for the methods of preparation, Non-Standardized Extracts “Dry extract” and Non-Standardized Ethanolic Extracts “Dry extract” as part of this monograph are ethanol and/or water only, unless otherwise specified. For Non-Standardized Aqueous Extracts “Dry extract”, water is the only solvent allowed.

Table 2.1. Cognitive function uses or purposes and associated daily doses for ingredients with nervine action
Uses or Purposes1 Medicinal Ingredients Methods of preparation Doses/day2

(Traditionally) used in Herbal Medicine to help relieve restlessness and/or nervousness (nervine/calmative)

Anemone pulsatilla (Pasqueflower)

Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 0.03-0.6 grams dried herb top, per day
Non-Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) 0.1-0.9 grams dried herb top, per day
Avena sativa (Oat) Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract)
  • 0.6-20 grams dried seed, per day
  • 3 grams dried herb top, per day
Nepeta cataria (Catnip) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 1.2-12 grams dried herb top, per day
Panax quinquefolius (American ginseng) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 0.5-12 grams dried root, per day
Tilia cordata (Small-leaf linden) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 1.5-12 grams dried flower, per day
Tilia platyphyllos (Large-leaf linden) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 1.5-12 grams dried flower, per day
Tilia x europaea (European Linden) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 1.5-12 grams dried flower, per day
Turnera diffusa (Damiana) Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 1.5-4 grams dried leaf/leaf and stem, per day
(Traditionally) used in Herbal Medicine to help relieve restlessness and/or nervousness (nervine/calmative) Hypericum perforatum (St. John's wort) Dry, Powder, Non- Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 2-12.6 grams dried herb top, per day; Not to exceed 4.2 grams per single dose
Used in Herbal Medicine to help relieve restlessness and/or nervousness (nervine/calmative) AND/OR (Used in Herbal Medicine to) help(s) relieve sleep disturbances associated with mood imbalance Standardized Extracts (Dry extract) 600-1800 milligrams of dried herb top extract, per day, standardized to 3-6% hyperforin and/or 0.12- 0.28% hypericin; Not to exceed 600 milligrams of extract per single dose
Helps (to) relieve sleep disturbances associated with mood imbalance L-5-Hydroxytryptophan (L-5-HTP) Isolate 100-200 milligrams, per day
(Traditionally) used in Herbal Medicine to help relieve restlessness and/or nervousness (which helps to promote sleep) (nervine/calmative) Matricaria chamomilla (German chamomile) Dry, Powder, Non- Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 1.5-24 grams dried flower, per day
Melissa officinalis (Lemon balm) Dry, Powder, Non- Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 0.4-13.5 grams dried herb top, per day
Scutellaria lateriflora (Skullcap) Dry, Powder, Non- Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 0.25-12 grams dried herb top, per day
Non-Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) 3-12 grams dried herb top, per day
Stachys officinalis (Wood betony) Dry, Powder, Non- Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 2-4 grams dried herb top, per day
Traditionally used in Ayurveda to balance aggravated Vata (nervine) AND/OR Traditionally used in Ayurveda to help relieve restlessness and/or nervousness (which helps to promote sleep). Withania somnifera (Ashwagandha) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 2-6 grams dried root, per day

1References consulted for the uses or purposes: Sutanto et al. 2024; ESCOP 2009; Bradley 2006; Bone 2003; Hoffman 2003; Barnes et al. 2002; Kapoor 2001; Blumenthal et al. 2000; Upton 2000; Wheatley 1999; Poldinger et al. 1991; Williamson et al. 1988; Ellingwood 1983; Felter and Lloyd 1983; Soulairac and Lambinet 1977; Grieve 1971.

2References consulted for the doses: Sutanto et al. 2024; CNF 2023; EMA 2008; Anghelescu et al. 2006; Bone 2003; Hoffman 2003; API 2001; Kapoor 2001; Blumenthal et al. 2000; Bradley 1992; Williamson et al. 1988; BHP 1983; Ellingwood 1983; Felter and Lloyd 1983; Soulairac and Lambinet 1977; Remington and Wood 1918; BPC 1911.

Table 2.2. Cognitive function uses or purposes and associated daily doses for ingredients with sedative (soporific) action
Uses or Purposes1 Medicinal Ingredients Methods of preparation Doses/day2

(Traditionally) used in Herbal Medicine as a sleep aid (during times of mental stress). AND/OR (Traditionally) used in Herbal Medicine to help relieve restlessness and/or nervousness (calmative).

Eschscholzia californica (California poppy) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 0.2-3 grams dried herb top, per day
Humulus lupulus (Hops) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 0.5-6 grams dried strobile, per day
Passiflora incarnata (Passionflower) Dry, Powder, Non- Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 0.25-8 grams dried herb top, per day
Non-Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) 1-8 grams dried herb top, per day

(Traditionally used in Herbal Medicine as a) sleep aid/(to) help(s) to promote sleep.
AND/OR
(Traditionally) used in Herbal Medicine to relieve restlessness and/or nervousness (calmative)

Valeriana officinalis (Valerian)

Dry, Powder, Non- Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 0.3-12 grams dried root/root and rhizome, per day; Not to exceed 3.6 grams per single dose
Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 0.3-12 grams of dried root/root and rhizome, per day3; Not to exceed 3.6 grams per single dose and: 0.05-0.90% valerenic acid
OR
0.10-0.90% sesquiterpenic acids

1References consulted for the uses or purposes: Williamson et al. 1988; refer to respective single ingredient monographs.

2References consulted for the doses: Williamson et al. 1988; refer to respective single ingredient monographs.

3Note: For Valerian extracts standardized to valerenic acid or sesquiterpenic acids, the quantity dried equivalent and the extract ratio must be provided.

Table 2.3. Cognitive function uses or purposes and associated daily doses for ingredients with with cognitive support action
Uses or Purposes1 Medicinal Ingredients Methods of preparation Doses/day2

Helps support cognitive/brain health/function.

Acetylcarnitine N/A 1.5-4 grams, per day
Bacopa monnieri (Bacopa) Standardized Extracts (Dry extract) 300 milligrams dried whole plant/herb top extract, per day, standardized to 40-55% bacosides
Cod liver oil Standardized fixed oil 18 years:
0.77-4 grams Cod liver oil, per day
And
150-1,360 milligrams EPA + DHA including at least 100 milligrams DHA, per day
And
138-2,800 micrograms RAE (vitamin A), per day
And
1.15-23.12 micrograms vitamin D3, per day
19 years and older:
0.77-4 grams Cod liver oil, per day
And
150-1,360 milligrams EPA + DHA including at least 100 milligrams DHA, per day
And
138-3,000 micrograms RAE (Vitamin A), per day
And
1.15-25 micrograms Vitamin D3, per day
L-alpha-Glycerophosphorylcholine (Choline alfoscerate) N/A 1.2 grams, per day

Fish oil

Standardized fixed oil

150-5,000 milligrams EPA and DHA including at least 100 milligrams DHA, per day3
Phosphatidylserine N/A 300 milligrams, per day
Schizochytrium oil Standardized fixed oil 200-2,000 milligrams DHA, per day
Helps (to) support memory Bacopa monnieri (Bacopa) Standardized Extracts (Dry extract) 300 milligrams dried whole plant/herb top extract, per day, standardized to 40- 55% bacosides
Traditionally used in Ayurveda for memory enhancement Bacopa monnieri (Bacopa) Dry, Powder, Non- Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 1-6.5 grams dried whole plant/herb top, per day
Withania somnifera (Ashwagandha) Dry, Powder, Non- Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 2-6 grams dried root, per day
Helps (to) improve sustained attention. Citicoline N/A 250-1000 milligrams per day; not to exceed 500 milligrams per single dose
Helps (to) support cognitive health and/or brain function in older adults. N/A 500-1000 milligrams per day; not to exceed 500 milligrams per single dose
Used in Herbal Medicine to help improve mental performance after periods of mental exertion Eleutherococcus senticosus (Eleuthero) Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 0.91-6 grams dried root, per day
Helps (to) enhance cognitive function and/or memory in adults Ginkgo biloba (Ginkgo) Standardized Extracts (Dry extract) 80-240 milligrams of extract, per day (50:1; quantity crude equivalent 4 - 12 g of dried leaves, per day) providing at least 80 milligrams of extract per single dose and standardized to:
22-27% flavonoid glycosides
And
5-7% terpene lactones

(Used in Herbal Medicine to) help(s) support cognitive function and/or reduce mental fatigue (in cases of mental stress)
AND/OR
Helps support cognition

Panax ginseng (Panax ginseng)

Dry, Powder, Non-Standardized Extracts (Dry extract, Tincture, Fluid Extract, Decoction, Infusion) 0.5-9 grams dried root/ rootlet, per day
Standardized Extracts (Dry extract) 200-600 milligrams of extract, per day; standardized to 4-7% total ginsenosides; Not to exceed a quantity crude equivalent of 9 grams of dried root/rootlet, per day

(Used in Herbal Medicine) (to) help(s) support cognitive function (such as mental focus and mental stamina)

Rhodiola rosea (Rhodiola)

Tincture 1.2-1.8 grams of dried root/root and rhizome, per day
Standardized Extracts (Dry extract) 144-680 milligrams of dried root/root and rhizome extract, per day; Not to exceed 200 milligrams per single dose and:
0.8-3% salidroside
And/Or
1-6% rosavins
Helps to decrease cognitive fatigue due to physically stressful situations (e.g. extended wakefulness, exposure to cold, excessive noise). L-Tyrosine N/A 10-20 grams, per day; Not to exceed 10 grams per single dose

1References consulted for the uses or purposes: Nakazaki et al. 2021; McGlade et al. 2015, 2012; Morgan and Stevens 2010; Yurko-Mauro et al. 2010; Barbhaiya et al. 2008; Calabrese et al. 2008; Malaguanera et al. 2008; Stough et al. 2008; Raghav et al. 2006; Murthy 2004; De Jesus Moreno Moreno 2003; Roodenrys et al. 2002; API 2001; Parnetti et al. 2001; Stough et al. 2001; Thal et al. 2000; Upton 2000; Neri et al. 1995; Barbagallo et al. 1994; Pettegrewet al. 1994; Parnetti et al. 1993; Sano et al. 1992; Canal et al. 1991; Spagnoli et al. 1991.

2References consulted for the doses : Nakazaki et al. 2021; McGlade et al. 2015, 2012; Cotroneo et al. 2013; EFSA 2013; Jensen et al. 2010; Morgan and Stevens 2010; Quinn et al. 2010; Yurko-Mauro et al. 2010; Calabrese et al. 2008; Malaguanera et al. 2008; Mahoney et al. 2007; Bone 2003; De Jesus Moreno Moreno 2003; API 2001; Kapoor 2001; Parnetti et al. 2001; Stough et al. 2001; Thal et al. 2000; Barbagallo et al. 1994; Pettegrewet al. 1994; Parnetti et al. 1993; Sano et al. 1992; Canal et al. 1991; Spagnoli et al. 1991.

3For fish oil including species of Gadidae as a source material, the vitamin A and D content should be tested to ensure that the daily maximum amounts meet the Multi-Vitamin/Mineral Supplements monograph for each age group.

Table 2.4. Cognitive function uses or purposes and associated daily doses for caffeine and ingredients containing caffeine
Uses or Purposes1 Medicinal Ingredients Methods of preparation Doses/day2
Helps (temporarily) (to) promote alertness and wakefulness, and (to) enhance cognitive performance
AND/OR
Helps (temporarily) (to) relieve/reduce fatigue/tiredness
AND/OR
Helps (temporarily) (to) support/promote mental sharpness/alertness
1,3,7-Trimethylxanthine (Caffeine) N/A 100-400 milligrams, per day and 100-200 milligrams per single dose
Ilex paraguariensis (Yerba mate) Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) Extract standardized to caffeine corresponding to a maximum Quantity Crude Equivalent of 6 grams dried leaf, per day; not exceeding 150 milligrams caffeine per day; and providing 100-150 milligrams caffeine per single dose
Paullinia cupana (Guarana) Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) Extract standardized to caffeine corresponding to a maximum Quantity Crude Equivalent of 3 grams dried seed per day and not exceeding 200 milligrams caffeine per day; and providing 100-200 milligrams caffeine per single dose

Used in Herbal Medicine to help temporarily promote alertness and wakefulness, and to enhance cognitive performance

Ilex paraguariensis (Yerba mate)

Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) Extract standardized to caffeine corresponding to a Quantity Crude Equivalent of 3-6 grams dried leaf, per day and not exceeding 150 milligrams caffeine per day
Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) Extract standardized to caffeine corresponding to a Quantity Crude Equivalent of 2-6 grams dried leaf, per day and not exceeding 150 milligrams caffeine per day
Paullinia cupana (Guarana) Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) Extract standardized to caffeine corresponding to a Quantity Crude Equivalent of 1-3 grams dried seed, per day and not exceeding 200 milligrams caffeine per day

1References consulted for the uses or purposes: EMA 2013; EMA 2010; ESCOP 2009; Bradley 2006; Christopher et al. 2005; Kennedy al. 2004; Taylor 2003; Barnes et al. 2002; Kamimori et al. 2000; Zwyghuizen- Doorenbos et al. 1990.

2References consulted for the doses: Health Canada 2018; EMA 2013; Health Canada 2012; EMA 2010; ESCOP 2009; Bradley 2006; Taylor 2003.

Table 2.5. Cognitive function uses or purposes and associated daily doses for ingredients with relaxation action
Uses or Purposes1 Medicinal Ingredients Methods of preparation Doses/day2

Helps (to) temporarily promote relaxation

4-Aminobutanoic acid (GABA) N/A 50-3,000 milligrams, per day; Not to exceed 750 milligrams per single dose
L-Theanine N/A 200-250 milligrams, per day

1References consulted for the uses or purposes: Kanehira et al. 2011; Abdou et al. 2006.

2References consulted for the doses: Kanehira et al. 2011; Powers et al. 2007; Yamakoshi et al. 2006.

Table 2.6. Cognitive function uses or purposes and associated daily doses for ingredients with adaptogen action
Uses or Purposes1 Medicinal Ingredients Methods of preparation Doses/day2
Used in Herbal Medicine as an adaptogen to help increase energy and resistance to stress over time (e.g. in case of mental and physical fatigue related to stress) Asparagus racemosus (Shatavari) Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 2-6 grams dried root, per day
Astragalus membranaceus (Astragalus) Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 2-4.8 grams dried root, per day

Eleutherococcus senticosus (Eleuthero)

Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 1-6 grams dried root/root and rhizome, per day
Non-Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) 2-3 grams dried root/root and rhizome, per day

Ganoderma lucidum (Reishi)

Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 1.5-6 grams dried cultured mycelium/ fruiting body/mycelium, per day
Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 1.5-6 grams of dried cultured mycelium/ fruiting body/mycelium, per day and not to exceed 40 % polysaccharides
Decoction, Decoction concentrate 3-15 grams dried cultured mycelium/ fruiting body/mycelium, per day
Decoction Standardized, Decoction concentrate Standardized 3-15 grams dried cultured mycelium/ fruiting body/mycelium, per day and not to exceed 40 % polysaccharides
Glycyrrhiza glabra (Licorice) Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 0.6-6 grams dried root/root and stolon, per day

Ocimum tenuiflorum (Holy basil)

Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 2-3 grams dried leaf, per day
Non-Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) 4.2-28 grams dried leaf, per day

Panax ginseng (Panax ginseng)

Dry, Powder, Non- Standardized Extracts (Dry extract, Tincture, Fluid Extract, Decoction, Infusion) 0.5-9 grams dried root/ rootlet, per day
Standardized Extracts (Dry extract) 200-600 milligrams of extract, per day; standardized to 4-7% total ginsenosides; Not to exceed a quantity crude equivalent of 9 grams dried root/rootlet, per day

Panax quinquefolius (American ginseng)

Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 1-3 grams dried root, per day
Non-Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) 6-9 grams dried root, per day; Not to exceed 3 grams per single dose

Rhodiola rosea (Rhodiola)

Non-Standardized Ethanolic Extracts (Dry extract) 144-400 milligrams of dry extract and a quantity crude equivalent of 216-2,000 milligrams of dried root/root and rhizome, per day; Not to exceed 200 milligrams of dry extract and a QCE of 1 gram of dried root/root and rhizome, per single dose
Tincture 1.2-1.8 grams of dried root/root and rhizome, per day
Standardized Extracts (Dry extract) 144-680 milligrams of dried root/root and rhizome extract, per day; Not to exceed 200 milligrams per single dose and:
0.8 - 3% salidroside
And/Or
1 - 6% rosavins

Schisandra chinensis (Schisandra)

Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract 1.2-6 grams dried fruit, per day
Non-Standardized Aqueous Extracts (Dry extract, Decoction, Infusion) 1.5-6 grams dried fruit, per day

Tinospora cordifolia (Guduchi)

Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 0.9-3 grams dried stem, per day
Decoction, Decoction concentrate 20-30 grams dried stem, per day
Withania somnifera (Ashwagandha) Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract 2.5-6.5 grams dried root/whole plant, per day

(Used as an adaptogen) (to) help(s) (to) temporarily relieve symptoms of stress (such as mental fatigue and sensation of weakness)

Rhodiola rosea (Rhodiola)

Non-Standardized Ethanolic Extracts (Dry extract) 144-400 milligrams dry extract and a Quantity Crude Equivalent (QCE) of 216-2,000 milligrams of dried root/root and rhizome, per day; Not to exceed 200 milligrams of extract and a QCE of 1 gram of dried root/root and rhizome, per single dose
Tincture 1.2-1.8 grams of dried root/root and rhizome, per day
Standardized Extracts (Dry extract) 144-680 milligrams of dried root/root and rhizome extract, per day; Not to exceed 200 milligrams per single dose and:
0.8 - 3% salidroside
And/Or
1 - 6% rosavins
Traditionally used in Ayurveda as Rasayana (rejuvenative tonic) Asparagus racemosus (Shatavari) Dry, Powder, Non-Standardized Ethanolic Extracts (Dry extract, Tincture, Fluid extract) 3-6 grams dried root, per day
Withania somnifera (Ashwagandha) Dry, Powder, Non- Standardized Extracts (Dry extract, Tincture, Fluid extract, Decoction, Infusion) 2-6 grams dried root, per day

1References consulted for the uses or purposes: Upton 2012; Winston and Maimes 2007; Mills and Bone 2005; API 2004; WHO 2004; Bone 2003; Hoffman 2003; Thomsen 2002; Williamson 2002; API 2001; Blumenthal et al. 2000; Upton 2000, 1999; WHO 1999; Bradley 1992.

2References consulted for the doses: Upton 2012; Winston and Maimes 2007; Mills and Bone 2005; API 2004, 2001; WHO 2004; Bone 2003; Hoffman 2003; Thomsen 2002; Williamson 2002; Kapoor 2001; Blumenthal et al. 2000; Upton 1999; WHO 1999; Bradley 1992.

Table 2.7. Maximum daily doses for complementary ingredients with no associated recommended use
Medicinal Ingredients Methods of preparations Doses/day1
Huperzia serrata (Toothed club-moss) Standardized extracts (Dry extract) Up to 20 milligrams extract standardized to huperzine A, per day; Not to exceed 1% huperzine A potency
Huperzine A N/A Up to 200 micrograms, per day
Theacrine N/A Up to 300 milligrams, per day
Theobromine N/A Up to 850 milligrams, per day

1References consulted for the doses: Clewell et al. 2016; Taylor et al. 2016; Neufingerl et al. 2013; Ma et al. 2007; Sun et al. 1999.

Direction(s) for use

See Table 5 below.

Combination rules and restrictions

All medicinal ingredients included in this monograph may be combined across all groups, with the following restrictions:

Use or Purpose Restrictions

Rules for sedative (soporific) ingredients (table 2.2)

If sedative ingredients (table 2.2) are combined, the sum of the percentages of the maximum daily reference dose must not exceed 120%, for all sedative ingredients in the product (including sedative ingredients supported by other NNHPD monographs such as melatonin). Note that no single ingredient can exceed 100% of its maximum daily reference dose. Please see Table 3 below for a calculation example.

Table 3. Combination Table to assess Safety of Sedative/Soporific Ingredients
Additive Indication e.g. Used in Herbal Medicine as a sleep aid
Medicinal Ingredients Maximum Daily Recommended Dose on PLA form Maximum Daily Monograph Reference Dose Percentage of the Maximum Daily Reference Dose (%)
Eschscholzia californica (California poppy) 0.5 g 3 g 0.5/3 = 16.67%
Humulus lupulus (Hops) 4 g 6 g 4/6 = 66.66%
Passiflora incarnata (Passionflower) 0.5 g 8 g 0.5/8 = 6.25%
Sum of Percentages 89.6%

The calculations are performed as follows:

Safety assessment - Sum of Percentages:

Rules for Caffeine

Table 4. Combination Table to assess safety of ingredients with a caution for cardiovascular and/or blood pressure conditions.
Additive Effect Ingredients which may have an impact on heart rate and/or blood pressure
Medicinal Ingredients Maximum Daily/ Single Recommended Dose on PLA form Maximum Daily/ Single Monograph Reference Dose Percentage of the Maximum Daily/ Single Reference Dose (%)
Caffeine 100 mg 200 mg per single dose/400 mg per day 100/200 = 50% (single dose)
100/400 = 25% (day)
Theacrine 120 mg 300 mg 120/300 = 40%
Theobromine 50 mg 850 mg 50/850 = 5.9%
Sum of Percentages 95.9% per single dose/ 70.9% per day

See table 3 above for an example of calculations. In this example, the sum of Percentages of the Maximum Monograph Reference Single Dose is 95.9%, which is less than 120%. Safety of the combination of ingredients is therefore supported by the monograph.

Rules for Huperzine A

When combining Huperzia serrata extract and Huperzine A (isolate or synthetic), the total quantity of Huperzine A provided by the product cannot exceed 200 micrograms per day.

Duration(s) of Use

See Table 5 below.

Risk Information

Consult Table 5 for appropriate statements related to each medicinal ingredient. The medicinal ingredients in Table 5 are associated with the required numbered statements below.

  1. As per the respective NNHPD monograph.

Duration(s) of Use

  1. Products providing Huperzia serrata, Huperzine A, 300 mg or more GABA per day, or over 150 mg Theobromine per day: Ask a health care practitioner/health care provider/health care professional/doctor/physician for use beyond 4 weeks.
  2. Products providing 101 to 300 mg/day Theacrine: Ask a health care practitioner/health care provider/health care professional/doctor/physician for use beyond 8 weeks.

Caution(s) and warning(s)

  1. Ask a health care practitioner/health care provider/health care professional/doctor/ physician if symptoms persist or worsen.
  2. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you are pregnant or breastfeeding.
  3. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you are pregnant.
  4. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you are breastfeeding.
  5. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you have a urinary tract disorder and/or kidney disease.
  6. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you have kidney disease and/or a seizure disorder.
  7. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you have high blood pressure or glaucoma.
  8. Products providing Huperzia serrata, huperzine A, or over 150 mg/day theobromine: Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you have a cardiovascular or blood pressure condition.
  9. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you are taking medications which affect acetylcholine levels (cholinergic or anticholinergic drugs).
  10. Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you are taking dopaminergic or cholinergic drugs.
  11. Products making a sustained attention claim: Ask a health care practitioner/health care provider/health care professional/doctor/ physician before use if you have an attention deficit disorder with or without hyperactivity (ADD or ADHD).
  12. When using this product exercise caution if you drive or use machinery as you may experience drowsiness.
  13. Products providing 300 mg or more GABA per day: When using this product avoid taking with alcohol.

Contraindication(s)

  1. Do not use this product if you are pregnant or breastfeeding.
  2. Do not use this product if you are pregnant.
  3. Do not use if you have gastrointestinal irritation.

Known adverse reaction(s)

  1. Stop use and ask a health care practitioner/health care provider/health care professional/doctor/physician if you experience dizziness, unusual muscle cramping, agitation, gastrointestinal symptoms such as nausea, vomiting, diarrhea or excessive salivation.
  2. Stop use and ask a health care practitioner/health care provider/health care professional/doctor/physician if hypersensitivity/allergy occurs.
  3. Stop use if you experience severe stomach and/or intestinal irritation.
  4. When using this product you may experience gastrointestinal discomfort/disturbances.
  5. When using this product you may experience headaches or gastrointestinal disturbances.
  6. When using this product (a) diuretic effect may occur.
Table 5. Risk information, durations of use, and directions for use associated with medicinal ingredients
Medicinal Ingredients Risk Information Durations of Use Directions for use
1,3,7-Trimethylxanthine (Caffeine) 1 1
4-Aminobutanoic acid (GABA) 5,16 2
Acetyl-L-Carnitine (Acetylcarnitine) 5, 9, 23
Anemone pulsatilla (Pasqueflower) 4, 8, 17, 19, 22
Asparagus racemosus (Shatavari) 6
Astragalus membranaceus (Astragalus) 1
Avena sativa (Oat) 4
Bacopa monnieri (Bacopa) 5, 23
Citicoline 5, 13, 14, 24
Cod liver oil 1
Eleutherococcus senticosus (Eleuthero) 1 1
Eschscholzia californica (California poppy) 1 1
Fish oil 1
Ganoderma lucidum (Reishi) 1 1
Ginkgo biloba (Ginkgo) 1 1
Glycyrrhiza glabra (Licorice) 1 1
Humulus lupulus (Hops) 1 1
Huperzia serrata; Huperzine A 11, 12, 17, 20 2
Hypericum perforatum (St. John's wort) 1 1
Ilex paraguariensis (Yerba mate) 5, 10, 21, 25
L-5-Hydroxytryptophan (L-5-HTP) 1 1 1
L-alpha-Glycerophosphorylcholine (Choline alfoscerate) 5
L-Theanine 1
L-Tyrosine

1 1 1
Matricaria chamomilla (German chamomile) 1
Melissa officinalis (Lemon balm) 1
Nepeta cataria (Catnip) 1
Ocimum tenuiflorum (Holy basil) 1
Panax ginseng (Asian ginseng) 1 1
Panax quinquefolius (American ginseng) 1
Passiflora incarnata (Passionflower) 1 1
Paullinia cupana (Guarana) 5, 10, 21, 25
Phosphatidylserine 1
Rhodiola rosea (Rhodiola) 1
Schisandra chinensis (Schisandra) 7, 18
Scutellaria lateriflora (Skullcap) 1
Stachys officinalis (Wood Betony) 4, 5, 15
Theacrine 5, 10 3
Theobromine 5, 11, 23 2
Tilia cordata (Small-leaf linden) 1
Tilia platyphyllos (Large-leaf linden) 1
Tilia x europaea (European linden) 1
Tinospora cordifolia (Guduchi) 5
Turnera diffusa (Damiana) 4, 7, 18
Valeriana officinalis (Valerian) 1 1
Withania somnifera (Ashwagandha) 1
Combination of ingredients resulting in a total caffeine content of 40 mg/day or more (e.g. Yerba mate and Guarana extracts) as per the caffeine monograph as per the caffeine monograph

References: Nakazaki et al. 2021; Clewell et al. 2016; Taylor et al. 2016; Kuhman et al. 2015, McGlade et al. 2015, Morasch et al. 2015, Baggott et al. 2013, Cotroneo et al. 2013; EFSA 2013; EMA 2013; Gardner and McGuffin 2013, Neufingerl et al. 2013, Yang et al. 2013, McGlade et al. 2012, Fiebich et al. 2011; AMR 2010; Morgan and Stevens 2010; Okun et al. 2010, Van den Bogaard et al. 2010; ESCOP 2009; Wang et al. 2009; Calabrese et al. 2008; CPS 2008; Li et al. 2008, Cornelis and El-Sohemy 2007; Powers et al. 2007; Bain et al.2006; Bradley 2006; Bui et al. 2006; Mills et al. 2006; Shils et al. 2006; Turner et al. 2006; Bouchard et al. 2005; Chandrasekaran et al. 2005; Haller et al. 2005; Noordzij et al. 2005; Nathan et al. 2004; Bone 2003; Zangara 2003; Avisar et al. 2002; Barnes et al. 2002; Berardi et al. 2002; Thomsen 2002; Brinker 2001; Nathan et al. 2001; Stough et al. 2001; Arya et al. 2000; Pepping 2000; Vahedi et al. 2000; Jee et al. 1999; Sun et al. 1999; Mester et al. 1995; Xu et al. 1995, Bradley 1992; Zimmerman 1992; Creighton and Stanton 1990; Rai et al. 1990; Jefferson 1988.

Non-medicinal ingredients

Must be chosen from the current Natural Health Products Ingredients Database (NHPID) and must meet the limitations outlined in the database.

Storage conditions

Must be established in accordance with the requirements described in the Natural Health Products Regulations.

Products containing Cod liver oil, Fish oil or Schizochytrium oil

(except when encapsulated)

Refrigerate after opening (Senanayake and Fichtali 2006; Wille and Gonus 1989).

(information for industry; not for labelling)

To be packaged in airtight container, protected from light (Ph.Eur. 2023; USP-NF 2023).

Specifications

EXAMPLE OF PRODUCT FACTS:

Consult the Guidance Document, Labelling of Natural Health Products for more details.

Product Facts Table

Product Facts Table

References Cited

References Reviewed