Major interaction on record — check this product against your medications before combining. Based on 8 of 9 ingredients. Check your meds →
Dietary supplement

Keratin Care Ingredients & Drug Interactions

by Bluebonnet Beautiful Ally

Keratin Care label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Keratin Care against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Major

Keratin Care is a dietary supplement by Bluebonnet Beautiful Ally with 9 active ingredients. Its ingredients are commonly taken for hair growth and thinning hair, brittle nails, skin health.Based on those ingredients, 1,077 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Trans-Resveratrol, Vitamin A, L-Cysteine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Keratin Care by Bluebonnet Beautiful Ally

Ask about any prescription or over-the-counter medication and we check it for interactions with Keratin Care by Bluebonnet Beautiful Ally — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Keratin Care by Bluebonnet Beautiful Ally

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 13, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 4 of its 9 active ingredients.
  • “Amino Acid Blend” is a proprietary blend — the label gives one combined amount (150 mg) without saying how much of each component you get.
  • “Cynatine HNS” is listed as a grouped ingredient — the label gives one combined amount (500 mg) without saying how much of each component you get.

Keratin Care contains 9 ingredients, including several amino acids: glycine, L-alanine, L-proline, L-cysteine, and L-serine. These building blocks support the structure of hair and skin.

The product also supplies biotin, which helps maintain healthy hair and skin; vitamin A, essential for cell growth and skin function; and trans-resveratrol, an antioxidant from plants. Soluble keratin is the form of keratin used here.

The inactive ingredients are vegetable capsules, cellulose, and magnesium stearate.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: strengthen and revitalize hair.
  • We looked for evidence on: Alopecia areata, Androgenic alopecia, Biotin deficiency, Brittle nails, hair thinning, hair loss — and 1 related terms.
  • The strongest evidence on file: Biotin is rated "Likely Effective" for Biotin deficiency (Natural Medicines).
  • Also on file: Biotin is rated "Insufficient Reliable Evidence To Rate" for Alopecia areata, Brittle nails.
  • Also on file: L-cysteine is rated "Insufficient Reliable Evidence To Rate" for Androgenic alopecia.

The amino acids and nutrients in this product are studied for various uses, but the evidence is mixed. Glycine and L-serine show possibly effective evidence for schizophrenia support, though that's outside the scope of a hair-and-skin supplement.

Biotin is effective for biotin deficiency but showed possibly ineffective results for multiple sclerosis and seborrheic dermatitis. Vitamin A is effective for vitamin A deficiency and possibly effective for aging skin, oral leukoplakia, measles, ulcerative colitis, and lung issues in premature infants.

Trans-resveratrol is possibly effective for obesity and allergic rhinitis but possibly ineffective for cardiovascular disease and high cholesterol. For most other uses claimed by keratin supplements—like strengthening hair or improving skin texture—the evidence on these specific ingredients is insufficient or not established in our data.

The evidence, ingredient by ingredient Biotin Glycine Alpha-alanine Proline L-cysteine Serine Vitamin A Resveratrol

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 5 of the 8 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 8 of 8.
  • General safety write-ups exist for 8 of 8.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Most ingredients in Keratin Care are generally well tolerated at typical doses. Glycine and L-serine have limited long-term safety data; L-serine carries a rare risk of seizures at very high doses and may cause gastrointestinal distress.

Biotin is well tolerated because excess is excreted in urine; high-dose resveratrol may cause diarrhea or digestive upset. Vitamin A is safe at recommended amounts but builds up in the body and can be toxic at high doses—causing headache, skin problems, liver damage, and in severe cases, brain swelling or coma.

L-cysteine and L-proline safety from long-term supplement use is not well studied. Pregnancy and lactation: L-alanine and L-cysteine are likely safe; vitamin A at normal supplement amounts is likely safe but high-dose retinol forms should be avoided as they may cause birth defects; biotin and resveratrol are likely safe in food/supplement amounts.

L-serine and L-proline have insufficient data—talk with your doctor or pharmacist before taking during pregnancy or while breastfeeding. Glycine pregnancy and lactation data are incomplete on file.

Side effects, ingredient by ingredient Biotin Glycine Alpha-alanine Proline L-cysteine Serine Vitamin A Resveratrol

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 4 of the 8 matched ingredients can interact with medications — Resveratrol, Vitamin A, Glycine, L-cysteine.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 1,078 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking Keratin Care, double-check with your doctor or pharmacist if you're on a retinoid (Major severity), warfarin or other blood thinners, tetracycline antibiotics, liver-toxic medications, antidiabetes drugs, clozapine, or any drug metabolized by the liver enzymes CYP2C19, CYP1A2, CYP3A4, or CYP2E1. These interactions range from serious (vitamin A with retinoids) to theoretical but plausible (resveratrol enzyme effects).

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with clinical evidence supporting its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

Keratin Care combines amino acids and nutrients meant to support hair and skin health, though evidence for that specific claim is limited in our data. If you take clozapine, any antidiabetes drug, warfarin, tetracycline antibiotics, retinoid skin medications, or drugs metabolized by your liver (a large category), you'll need to review this product with your own doctor or pharmacist first—the interactions can be serious.

Anyone pregnant, breastfeeding, or with liver disease should also check with their healthcare provider before starting.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 8 of 9 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jul 21, 2022.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Keratin Care, straight from the product label.

Brand Bluebonnet Beautiful Ally
Barcode (UPC) 743715015180
Net contents 30 Vegetable Capsule(s)
Market status On market
Date entered into DSLD Jul 21, 2022
DSLD ID 268187
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Keratin Care by Bluebonnet Beautiful Ally, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
30
UPC/BARCODE
743715015180
IngredientAmount% DV
Glycine0 NP--
L-Alanine0 NP--
Biotin5000 mcg16667%
L-Proline0 NP--
L-Cysteine0 NP--
Amino Acid Blend150 mg--
L-Serine0 NP--
Soluble Keratin300 mg--
Vitamin A750 mcg83%
Trans-Resveratrol20 mg--
Cynatine HNS500 mg--

Other ingredients: Kosher Vegetable Capsules, Vegetable Cellulose, Vegetable Magnesium Stearate

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement, take one capsule daily or as directed by a healthcare practitioner.

Formula

Bluebonnet’s Beautiful Ally Keratin Care Vegetable Capsules are specially formulated to strengthen and revitalize hair so that it is full and gorgeous. This restorative hair care formula with Cynatine HNS, a clinically-studied, bioactive, solubilized keratin - along with biotin, resveratrol, vitamin A and a unique amino acid blend - helps to protect and repair damaged hair from the inside out.

Brand IP Statement(s)

Beautiful Ally and Keratin Care are registered trademarks of Bluebonnet Nutrition Corporation. Cynatine HNS is a registered trademark of Roxlor International, LLC.

Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Formulation

Strengthen & revitalize hair

Non GMO Gluten free Soy free

Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat and soybeans. Also free of yeast, gluten, barley, rice, sodium.

FDA Statement of Identity

Dietary Supplement

General Statements

Stay connected

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Keratin Care by Bluebonnet Beautiful Ally label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Keratin Care label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Keratin Care by Bluebonnet Beautiful Ally

These are the 9 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Biotin

No known
interactions
5000 mcg per serving

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get...

Biotin monograph & interactions

Amino Acid Blend

150 mg per serving

Vitamin A

Interacts with
387 drugs
750 mcg per serving Form: Vitamin A Palmitate

Vitamin A is an essential nutrient important for vision, skin, immune function, and growth. Most people get enough from a balanced diet, and supplemen...

Vitamin A monograph & interactions

Trans-Resveratrol

Interacts with
822 drugs
20 mg per serving Form: Japanese Knotweed root extract

Resveratrol is a plant compound found in red grapes, berries, and peanuts that is popular for heart health, anti-aging, and antioxidant support. While...

Trans-Resveratrol monograph & interactions

Cynatine HNS

500 mg per serving
  • › Soluble Keratin

Other (inactive) ingredients: Kosher Vegetable Capsules, Vegetable Cellulose, Vegetable Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Keratin Care by Bluebonnet Beautiful Ally Drug Interactions

Want to check YOUR meds against Keratin Care?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
1,077Drugs
9 Major 1,068 Moderate

Ingredients driving the most interactions

Trans-Resveratrol 822
Vitamin A 387
L-Cysteine 86
Glycine 1

Individual Drug Interactions

The ingredients in Keratin Care interact with 1,077 drugs. Click any drug to see the details.

4 of the 9 ingredients in Keratin Care interact with drugs. Each result below shows which ingredient is responsible. Trans-Resveratrol Vitamin A L-Cysteine Glycine

Each ingredient & the kinds of drugs it affects

For each ingredient in Keratin Care with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Trans-Resveratrol5 drug types · 822 drugs

Anticoagulant/Antiplatelet Drugs

Resveratrol may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Resveratrol seems to have antiplatelet effects.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, resveratrol might increase levels of drugs metabolized by CYP1A2.
In vitro research shows that resveratrol can inhibit CYP1A2 enzymes. However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, resveratrol might increase levels of drugs metabolized by CYP2C19.
In vitro research shows that resveratrol can inhibit CYP2C19 enzymes. However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2E1 (Cyp2E1) Substrates

Resveratrol might increase levels of drugs metabolized by CYP2E1.
In vitro research suggests that resveratrol inhibits CYP2E1 isoenzyme. Also, a pharmacokinetic study shows that taking resveratrol 500 mg daily for 10 days prior to taking a single dose of chlorzoxazone 250 mg increases the maximum concentration of chlorzoxazone by about 54%, the area under the curve of chlorzoxazone by about 72%, and the half-life of chlorzoxazone by about 35%. Chlorzoxazone is used as a probe drug for CYP2E1.

Likelihood Probable Evidence B
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, resveratrol might increase levels of drugs metabolized by CYP3A4.
In vitro research shows that resveratrol can inhibit the CYP3A4 enzyme. However, clinical research shows that taking resveratrol 3000 mg daily for 8 weeks does not necessitate dose adjustments to medications metabolized by CYP3A4.

Likelihood Possible Evidence D
Trans-Resveratrol full monograph & interactions

Vitamin A4 drug types · 387 drugs

Retinoids

Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Retinoids, which are vitamin A derivatives, could have additive toxic effects when taken with vitamin A supplements.

Likelihood Probable Evidence D
Hepatotoxic Drugs

Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
The tolerable upper intake level (UL) is the highest level of intake that is likely to pose no risk of adverse effects. Doses of vitamin A above the UL can cause hepatotoxicity, ranging from elevated liver enzymes to liver failure.

Likelihood Possible Evidence C
Tetracycline Antibiotics

Theoretically, taking tetracycline antibiotics with high doses of vitamin A can increase the risk of pseudotumor cerebri.
Benign intracranial hypertension (pseudotumor cerebri) can occur with tetracyclines and with acute or chronic vitamin A toxicity. Case reports suggest that taking tetracyclines and vitamin A concurrently can increase the risk of this condition. Avoid high doses of vitamin A in people taking tetracyclines chronically.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, high doses of vitamin A could increase the risk of bleeding with warfarin.
Vitamin A toxicity is associated with hemorrhage and hypoprothrombinemia, possibly due to vitamin K antagonism. Advise patients taking warfarin to avoid doses of vitamin A above the tolerable upper intake level of 10,000 IU/day for adults.

Likelihood Possible Evidence D
Vitamin A full monograph & interactions

L-Cysteine1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research suggests that L-cysteine can have hypoglycemic effects.

Likelihood Possible Evidence D
L-Cysteine full monograph & interactions

Glycine1 drug type · 1 drug

Clozapine (Clozaril)

Theoretically, glycine might decrease the effectiveness of clozapine.
One small clinical study in patients with schizophrenia shows that adding glycine to clozapine therapy worsens symptoms of schizophrenia when compared with clozapine alone. The mechanism of this interaction is unclear.

Likelihood Probable Evidence B
Glycine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Keratin Care, from the product label.

Bluebonnet Beautiful Ally

See all Bluebonnet Beautiful Ally products
Name
Bluebonnet Nutrition Corporation
Street Address
12915 Dairy Ashford
City
Sugar Land
State
Texas
ZipCode
77478
Web Address
www.bluebonnetnutrition.com
Pharmacist Counseling Corner

Keratin Care by Bluebonnet Beautiful Ally: Common Questions

Does Keratin Care by Bluebonnet Beautiful Ally interact with any medications?
Yes. Based on its ingredients, Keratin Care has a known interaction with 1,077 medications, including 9 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Keratin Care contains 9 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Does this product have any major interactions I should worry about?
Yes—the most serious is vitamin A with retinoid medications (like tretinoin or isotretinoin), which are used for severe acne or skin aging. The combination can raise vitamin A to toxic levels. You'll also want to check if you take warfarin, tetracycline antibiotics, or antidiabetes drugs. Talk to your pharmacist about your full medication list before starting.
Is it safe to take while pregnant or breastfeeding?
Most ingredients are likely safe at typical supplement amounts, but L-serine data advise against use in pregnancy and breastfeeding unless your doctor approves. L-proline safety during lactation is not established. Since high-dose vitamin A retinol can cause birth defects, make sure your doctor knows you're considering this product and that you're pregnant or nursing.
What are the side effects I might experience?
Most people tolerate this product well. Mild digestive upset—diarrhea, bloating, nausea—is the most common complaint, mainly from resveratrol or L-serine at higher doses. Rare serious effects include seizures from very high L-serine doses, or vitamin A toxicity (headache, skin problems, liver damage) if you're taking excessive amounts or combining it with other vitamin A sources.
Does this actually work for hair and skin?
The individual amino acids and nutrients here have some evidence for certain uses—biotin for biotin deficiency, vitamin A for aging skin and vitamin A deficiency, resveratrol for obesity and allergies—but we don't have strong evidence that this specific combination strengthens hair or improves skin texture. Results vary by person.
What is soluble keratin and why is it in here?
Soluble keratin is a processed form of keratin, the protein that makes up hair and skin structure. It's included because keratin supplements are marketed to support hair and skin health, though clinical evidence for that claim is limited in our data.
Are there any fillers or 'other' ingredients I should know about?
The inactive ingredients are vegetable capsules, cellulose (a plant fiber used as a binder), and vegetable magnesium stearate (a flow agent). No artificial colors or common allergens are listed.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Keratin Care is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Keratin Care label
Go deeper

The Full Monographs Behind Keratin Care’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Biotin

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get plenty from a normal diet, and true defi...

Read the full Biotin monograph → Herb & supplement monograph

Glycine

Interacts with 1 drug

Glycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep quality, where early research is promisin...

Read the full Glycine monograph → Herb & supplement monograph

Alpha-alanine

Alpha-alanine (usually called alanine) is a non-essential amino acid your body can make on its own and that you also get from protein foods. Most people do not need a supplement, and strong...

Read the full Alpha-alanine monograph → Herb & supplement monograph

Proline

Proline is a non-essential amino acid that your body can make on its own and that you also get from protein-rich foods. It is a key building block of collagen, but strong human evidence that...

Read the full Proline monograph → Herb & supplement monograph

L-cysteine

Interacts with 86 drugs

L-cysteine is a sulfur-containing amino acid your body uses to make proteins and the antioxidant glutathione. Most people get enough from food, and supplements are usually well tolerated, bu...

Read the full L-cysteine monograph → Herb & supplement monograph

Serine

Serine is an amino acid your body can make on its own and also gets from protein-rich foods, so most people do not need a supplement. L-serine has been studied for certain neurological condi...

Read the full Serine monograph → Herb & supplement monograph

Vitamin A

Interacts with 387 drugs

Vitamin A is an essential nutrient important for vision, skin, immune function, and growth. Most people get enough from a balanced diet, and supplements are mainly useful for correcting a tr...

Read the full Vitamin A monograph → Herb & supplement monograph

Resveratrol

Interacts with 822 drugs

Resveratrol is a plant compound found in red grapes, berries, and peanuts that is popular for heart health, anti-aging, and antioxidant support. While lab and animal studies are promising, s...

Read the full Resveratrol monograph →
Sources

Sources & How We Checked

Keratin Care's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 75 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Glycine 5 references
  1. Heresco-Levy U, Javitt DC, Ermilov M, et al. Efficacy of high-dose glycine in the treatment of enduring negative symptoms of schizophrenia. Arch Gen Psychiatry 1999;56:29-36.. PubMed
  2. Potkin SG, Jin Y, Bunney BG, Costa J, Gulasekaram B. Effect of clozapine and adjunctive high-dose glycine in treatment-resistant schizophrenia. Am J Psychiatry 1999;156:145-7.. PubMed
  3. Gusev EI, Skvortsova VI, Dambinova SA, et al. Neuroprotective effects of glycine for therapy of acute ischaemic stroke. Cerebrovasc Dis 2000;10:49-60. PubMed
  4. Inagawa K, Kawai N, Ono K, Sukegawa E, Tsubuku S, Takahashi M. Assessment of acute adverse effects of glycine ingestion at a high dose in human volunteers. Seikatsu Eisei. 2006; 50:27-32.
  5. Woods SW, Walsh BC, Hawkins KA, Miller TJ, Saksa JR, D'Souza DC, Pearlson GD, Javitt DC, McGlashan TH, Krystal JH. Glycine treatment of the risk syndrome for psychosis: report of two pilot studies. Eur Neuropsychopharmacol. 2013 Aug;23(8):931-40. PubMed

See these in context on the Glycine monograph →

Alpha-alanine 2 references
  1. Amino acids — MedlinePlus (NIH) Source
  2. Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements Source

See these in context on the Alpha-alanine monograph →

Biotin 4 references
  1. Debourdeau PM, Djezzar S, Estival JL, et al. Life-threatening eosinophilic pleuropericardial effusion related to vitamins B5 and H. Ann Pharmacother 2001;35:424-6. DOI
  2. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
  3. Mock DM, Quirk JG, Mock NI. Marginal biotin deficiency during normal pregnancy. Am J Clin Nutr 2002;75:295-9. PubMed
  4. Sedel F, Papeix C, Bellanger A, Touitou V, Lebrun-Frenay C, Galanaud D, et al. High doses of biotin in chronic progressive multiple sclerosis: a pilot study.Mult Scler Relat Disord. 2015;4(2):159-69. doi: 10.1016/j.msard.2015.01.005. PubMed

See these in context on the Biotin monograph →

Proline 4 references
  1. Jennings A, MacGregor A, Spector T, Cassidy A. Amino acid intakes are associated with bone mineral density and prevalence of low bone mass in women: Evidence from discordant monozygotic twins. J Bone Miner Res. 2016;31(2):326-35. PubMed
  2. Gracia-Marco L, Bel-Serrat S, Cuenca-Garcia M, et al. Amino acids intake and physical fitness among adolescents. Amino Acids. 2017;49(6):1041-1052. PubMed
  3. Jamdar J, Rao B, Netke S, et al. Reduction in tibial shaft fracture healing time with essential nutrient supplementation containing ascorbic acid, lysine, and proline. J Altern Complement Med. 2004;10(6):915-6.
  4. Mehl AA, Damião AO, Viana SD, Andretta CP. Hard-to-heal wounds: a randomised trial of an oral proline-containing supplement to aid repair. J Wound Care 2021;30(1):26-31. PubMed

See these in context on the Proline monograph →

L-cysteine 2 references
  1. Dowlati Y, Maheux M, Meyer JH. The effect of oral L-cysteine on breast milk and plasma cysteine concentrations. Neuropsychiatr Dis Treat 2020;16:3163-3172.
  2. Lee S, Han KH, Nakamura Y, et al. Dietary L-cysteine improves the antioxidative potential and lipid metabolism in rats fed a normal diet. Biosci Biotechnol Biochem 2013;77(7):1430-4.

See these in context on the L-cysteine monograph →

Serine 3 references
  1. Fridman V, Suriyanarayanan S, Novak P, et al. Randomized trial of l-serine in patients with hereditary sensory and autonomic neuropathy type 1. Neurology. 2019;92(4):e359-e370.
  2. Kantrowitz JT, Malhotra AK, Cornblatt B, et al. High dose D-serine in the treatment of schizophrenia. Schizophr Res. 2010 Aug;121(1-3):125-30. PubMed
  3. Levine TD, Miller RG, Bradley WG, et al. Phase I clinical trial of safety of L-serine for ALS patients. Amyotroph Lateral Scler Frontotemporal Degener. 2017;18(1-2):107-111. PubMed

See these in context on the Serine monograph →

Vitamin A 31 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Griffiths JK. The vitamin A paradox. J Pediatr 2000;137:604-7.. PubMed
  3. Hardman JG, Limbird LL, Molinoff PB, eds. Goodman and Gillman's The Pharmacological Basis of Therapeutics, 9th ed. New York, NY: McGraw-Hill, 1996.
  4. Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
  5. FDA Talk Paper. Vitamin A and birth defects (T95-56). Food and Drug Administration, U.S. Department of Health and Human Services, Rockville, MD. October 6, 1995.
  6. Russell RM. The vitamin A spectrum: from deficiency to toxicity. Am J Clin Nutr 2000;71:878-84. PubMed
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See these in context on the Vitamin A monograph →

Resveratrol 24 references
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See these in context on the Resveratrol monograph →

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