Interactions on record — worth a quick check against your medications. Based on 3 of 8 ingredients. Check your meds →
Dietary supplement

Endurance BCAA+ Sweet Tea Ingredients & Drug Interactions

by FN Formutech Nutrition

Endurance BCAA+ Sweet Tea label
See full label image
Powder Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Endurance BCAA+ Sweet Tea 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: Moderate

Endurance BCAA+ Sweet Tea is a dietary supplement by FN Formutech Nutrition with 8 active ingredients. Its ingredients are commonly taken for muscle recovery and sports performance, gut health and 'leaky gut', recovery from severe illness or injury.Based on those ingredients, 249 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin B6, L-Glutamine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Endurance BCAA+ Sweet Tea by FN Formutech Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with Endurance BCAA+ Sweet Tea by FN Formutech Nutrition — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Endurance BCAA+ Sweet Tea by FN Formutech Nutrition

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 Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 8 of its 8 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This product has 8 active ingredients designed to support endurance and recovery. The three branched-chain amino acids—L-Leucine, L-Isoleucine, and L-Valine—make up the BCAA backbone that muscles rely on during and after exercise.

L-Glutamine supports muscle recovery and is used clinically for certain medical conditions. Vitamin B6 is an essential nutrient involved in amino acid metabolism.

You'll also find Creatinol-O-Phosphate and Citrulline Malate, both linked to physical performance, plus CarnoSyn Beta-Alanine for stamina work. The remaining ingredients are inactive: natural and artificial flavors, sweeteners (sucralose and acesulfame-potassium), citric acid, malic acid, and silicon dioxide.

Does it work?

Moderate 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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: train harder longer and recover from exercise.
  • We looked for evidence on: Athletic performance, Physical performance, Exercise-induced muscle breakdown, Exercise-induced muscle damage, muscle fatigue, muscular strength — and 1 related terms.
  • The strongest evidence on file: Beta-alanine is rated "Possibly Effective" for Athletic performance (Natural Medicines).
  • Also on file: Beta-alanine is rated "Possibly Effective" for Physical performance.
  • Also on file: Glutamine is rated "Possibly Ineffective" for Athletic performance.

Beta-alanine is possibly effective for athletic and physical performance—it may help with endurance during high-intensity work, though the evidence isn't conclusive. It shows insufficient evidence for cognitive decline, COPD, general cognitive function, or menopausal symptoms.

L-Glutamine is effective for sickle cell disease and possibly effective for HIV/AIDS-related wasting, postoperative recovery, and critical illness from trauma—though these medical uses are beyond what most people use this powder for. Vitamin B6 is effective for treating sideroblastic anemia and vitamin B6 deficiency, likely effective for lowering homocysteine, and possibly effective for pregnancy-related nausea.

For the other ingredients—L-Leucine, L-Isoleucine, L-Valine, Creatinol-O-Phosphate, and Citrulline Malate—we hold no effectiveness data.

The evidence, ingredient by ingredient Glutamine Vitamin B6 Beta-alanine

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 3 of the 3 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 3 of 3.
  • General safety write-ups exist for 3 of 3.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

L-Glutamine is generally well tolerated in healthy adults, though people with kidney or liver disease should use it only under medical supervision. Common side effects include belching, bloating, flatulence, nausea, vomiting, diarrhea, constipation, headache, and GI pain—especially at high doses.

Vitamin B6 is safe at normal food and supplement amounts, but high doses over time can damage nerves; stay below 100 mg daily unless your doctor advises otherwise. Possible side effects include abdominal pain, headache, nausea, vomiting, and loss of appetite.

Beta-alanine is generally well tolerated but commonly causes harmless skin tingling and flushing, usually on the scalp, starting within 20 minutes and lasting about an hour—the tingling is milder at lower doses. There isn't enough safety data for L-Glutamine in pregnancy, and you should avoid beta-alanine during pregnancy and breastfeeding.

We hold no pregnancy or breastfeeding data for Vitamin B6 in the facts provided.

Side effects, ingredient by ingredient Glutamine Vitamin B6 Beta-alanine

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 2 of the 3 matched ingredients can interact with medications — Glutamine, Vitamin B6.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: seizure medications; Parkinson's medications.
  • For scale: 249 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 Endurance BCAA+ Sweet Tea, double-check with your pharmacist if you're on anticonvulsants like phenobarbital or phenytoin (vitamin B6 may reduce their effectiveness), blood pressure medications (vitamin B6 may add to their effect), amiodarone for heart rhythm (vitamin B6 might worsen light sensitivity), or levodopa alone without carbidopa (vitamin B6 can reduce its effect). No interactions are documented for the branched-chain amino acids or the other performance ingredients we could check.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This is an endurance supplement geared toward athletes looking for recovery and performance support. If you take anticonvulsants, blood pressure medication, amiodarone, or levodopa (for Parkinson's), check with your pharmacist first—L-Glutamine and Vitamin B6 may interfere.

If you're pregnant or breastfeeding, talk with your doctor before starting. The tingling from beta-alanine is normal and nothing to worry about.

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

Assessment coverage: 3 of 8 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Oct 22, 2021.

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 Endurance BCAA+ Sweet Tea, straight from the product label.

Brand FN Formutech Nutrition
Barcode (UPC) 811836022803
Net contents 15.8 Ounce(s); 450 Gram(s)
Market status On market
Date entered into DSLD Oct 22, 2021
DSLD ID 259061
Product type Other Combinations
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating)
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 Endurance BCAA+ Sweet Tea by FN Formutech Nutrition, 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:
15 Gram(s)
Maximum serving Sizes:
15 Gram(s)
Servings per container
30
UPC/BARCODE
811836022803
IngredientAmount% DV
Calories0 Calorie(s)--
L-Glutamine2.5 Gram(s)--
Vitamin B610 mg500%
L-Leucine3.5 Gram(s)--
L-Isoleucine1.8 Gram(s)--
L-Valine1.8 Gram(s)--
Creatinol-O-Phosphate1 Gram(s)--
Citrulline Malate1 Gram(s)--
CarnoSyn Beta-Alanine2 Gram(s)--

Other ingredients: Natural and Artificial flavors, Sucralose, Citric Acid, Acesulfame-Potassium, Malic Acid, Silicon Dioxide

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.
Formula

Endurance is a branch chain amino acid (BCAA+) formula designed to allow you to train harder and longer, as well as achieve maximum results during your recovery phase.

This product is only intended to be consumed by healthy individuals.

Creatinol-o-phosphate

2:1:1 BCAA ratio Beta alanine

Formulation

The ingredients included in this formula have been shown to: Delay muscle fatigue Increase muscular strength & power output Increase both anaerobic & aerobic endurance Promote vasodilation, leading to better assimilation & absorption of protein

Endurance BCAA+ is produced in a cGMP compliant certified facility.

Train harder & longer

Maximum recovery

Suggested/Recommended/Usage/Directions

Directions: Mix 1 scoop in 20 ounces of water, 1-2 times daily.

Precautions

Warning: Do not use if pregnant or nursing.

Keep out of reach of children.

Do not consume this product if you have a medical condition and/or are taking any prescription medication.

Do not exceed recommended serving. Consult your physician before starting any dietary supplement and/or exercising program. Caution: Persons or athletes that are subject to performance enhancement testing should consult with their sanctioning body before use.

Not suitable for persons under the age of 18 years old.

FDA Statement of Identity

Dietary Supplement

Brand IP Statement(s)

Natural Alternatives International (NAI) is the owner of patents as listed on www.carnosyn.com and registered trademark CarnoSyn. CarnoSyn Carnosine Synthesizer

FDA Disclaimer Statement

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

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

See for yourself

Endurance BCAA+ Sweet Tea by FN Formutech Nutrition label

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

Endurance BCAA+ Sweet Tea 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 Endurance BCAA+ Sweet Tea by FN Formutech Nutrition

These are the 8 active ingredients this product is made of. Select any to open its full monograph.

Serving size15 Gram(s) Dosage formPowder 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.

L-Glutamine

Interacts with
50 drugs
2.5 Gram(s) per serving

Glutamine is the most abundant amino acid in the body and is usually made in your muscles. A prescription form is FDA-approved to help reduce sickle c...

L-Glutamine monograph & interactions

Vitamin B6

Interacts with
210 drugs
10 mg per serving Form: Pyridoxine Hydrochloride

Vitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is b...

Vitamin B6 monograph & interactions

L-Leucine

3.5 Gram(s) per serving

L-Isoleucine

1.8 Gram(s) per serving

L-Valine

1.8 Gram(s) per serving

Creatinol-O-Phosphate

1 Gram(s) per serving

Citrulline Malate

1 Gram(s) per serving

CarnoSyn Beta-Alanine

No known
interactions
2 Gram(s) per serving

Beta-alanine is an amino acid taken mostly by athletes to raise muscle carnosine, which may help buffer acid and reduce fatigue during short, high-int...

CarnoSyn Beta-Alanine monograph & interactions

Other (inactive) ingredients: Natural and Artificial flavors, Sucralose, Citric Acid, Acesulfame-Potassium, Malic Acid, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Endurance BCAA+ Sweet Tea by FN Formutech Nutrition Drug Interactions

Want to check YOUR meds against Endurance BCAA+ Sweet Tea?

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
249Drugs
244 Moderate 5 Minor

Ingredients driving the most interactions

Vitamin B6 210
L-Glutamine 50

Individual Drug Interactions

The ingredients in Endurance BCAA+ Sweet Tea interact with 249 drugs. Click any drug to see the details.

2 of the 8 ingredients in Endurance BCAA+ Sweet Tea interact with drugs. Each result below shows which ingredient is responsible. Vitamin B6 L-Glutamine

Each ingredient & the kinds of drugs it affects

For each ingredient in Endurance BCAA+ Sweet Tea 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.

Vitamin B65 drug types · 210 drugs

Amiodarone (Cordarone)

Theoretically, vitamin B6 might increase the photosensitivity caused by amiodarone.
Despite initial case reports suggesting that pyridoxine may have a protective effect against amiodarone-induced photosensitivity, preliminary clinical research suggests that pyridoxine may actually exacerbate this adverse effect.

Likelihood Possible Evidence B
Antihypertensive Drugs

Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Research in hypertensive rats shows that vitamin B6 can decrease systolic blood pressure. Similarly, clinical research in patients with hypertension shows that taking high doses of vitamin B6 may reduce systolic and diastolic blood pressure, possibly by reducing plasma levels of epinephrine and norepinephrine.

Likelihood Possible Evidence B
Phenobarbital (Luminal)

High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenobarbital, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenobarbital to avoid high doses of vitamin B6.

Likelihood Possible Evidence D
Phenytoin (Dilantin)

High doses of vitamin B6 may reduce the levels and clinical effects of phenytoin.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenytoin, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenytoin to avoid high doses of vitamin B6.

Likelihood Possible Evidence D
Levodopa

Vitamin B6 may increase the metabolism of levodopa when taken alone, but not when taken in conjunction with carbidopa.
Vitamin B6 (pyridoxine) enhances the metabolism of levodopa, reducing its clinical effects. However, this interaction does not occur when carbidopa is used concurrently with levodopa (Sinemet). Therefore, it is not likely to be a problem in most people.

Likelihood Unlikely Evidence D
Vitamin B6 full monograph & interactions

L-Glutamine1 drug type · 50 drugs

Anticonvulsants

Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Glutamine is metabolized to the excitatory neurotransmitter glutamate. Glutamate might have antagonistic effects with anticonvulsant drugs. However, this interaction has not yet been reported in humans.

Likelihood Possible Evidence D
L-Glutamine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Endurance BCAA+ Sweet Tea, from the product label.

FN Formutech Nutrition

See all FN Formutech Nutrition products
Name
Formutech Nutrition
Street Address
6015-B Unity Dr
City
Norcross
State
GA
ZipCode
30071
Phone Number
888-839-7962
Web Address
FNUTRITION.COM
Pharmacist Counseling Corner

Endurance BCAA+ Sweet Tea by FN Formutech Nutrition: Common Questions

Does Endurance BCAA+ Sweet Tea by FN Formutech Nutrition interact with any medications?
Yes. Based on its ingredients, Endurance BCAA+ Sweet Tea has a known interaction with 249 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Endurance BCAA+ Sweet Tea contains 8 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.
Will this give me the tingling sensation I've heard about?
Yes, possibly—that's the beta-alanine. It causes harmless skin tingling and flushing that usually starts on your scalp about 20 minutes after you drink it and lasts around an hour. It's milder at lower doses and very mild for some people at lower amounts. It's not dangerous, just a sensation.
Is this safe if I'm pregnant or breastfeeding?
L-Glutamine is likely safe in pregnancy, but there isn't enough data to advise either way. Beta-alanine should be avoided during pregnancy and breastfeeding due to insufficient safety information. Talk with your doctor or pharmacist before using this product if you're pregnant or nursing.
What are BCAAs and why are they in here?
BCAAs—L-Leucine, L-Isoleucine, and L-Valine—are amino acids your muscles use during exercise and recovery. This product includes them to support endurance and help your body rebuild muscle after training.
Can I take this if I have kidney or liver problems?
L-Glutamine should only be used under medical supervision if you have kidney or liver disease. Talk with your doctor before starting this supplement.
Does this actually help with athletic performance?
Beta-alanine is possibly effective for athletic and physical performance, meaning the evidence suggests it may help but isn't definitive. The other ingredients don't have strong evidence in our data for performance, though they're used clinically for specific medical conditions.
What are the inactive ingredients and are there fillers?
The inactive ingredients are natural and artificial flavors, sucralose and acesulfame-potassium (sweeteners), citric acid, malic acid, and silicon dioxide. These are standard excipients that give the powder its texture, taste, and shelf stability.

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

Not sure if Endurance BCAA+ Sweet Tea is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.

Endurance BCAA+ Sweet Tea label
Go deeper

The Full Monographs Behind Endurance BCAA+ Sweet Tea’s Ingredients

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

Herb & supplement monograph

Glutamine

Interacts with 50 drugs

Glutamine is the most abundant amino acid in the body and is usually made in your muscles. A prescription form is FDA-approved to help reduce sickle cell disease complications, but for most...

Read the full Glutamine monograph → Herb & supplement monograph

Vitamin B6

Interacts with 210 drugs

Vitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is best known for helping with pregnancy-rel...

Read the full Vitamin B6 monograph → Herb & supplement monograph

Beta-alanine

Beta-alanine is an amino acid taken mostly by athletes to raise muscle carnosine, which may help buffer acid and reduce fatigue during short, high-intensity exercise. The evidence is moderat...

Read the full Beta-alanine monograph →
Sources

Sources & How We Checked

Endurance BCAA+ Sweet Tea'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 56 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.

Glutamine 11 references
  1. Miller AL. Therapeutic considerations of L-glutamine: a review of the literature. Altern Med Rev 1999;4:239-48..
  2. Bozzetti F, Biganzoli L, Gavazzi C, et al. Glutamine supplementation in cancer patients receiving chemotherapy: a double-blind randomized study. Nutrition 1997;13:748-51.. PubMed
  3. Mebane AH. L-Glutamine and mania. Am J Psychiatry 984;141:1302-3.
  4. Meldrum BS. Glutamate as a neurotransmitter in the brain: review of physiology and pathology. J Nutr 2000;130:1007S-15S.. PubMed
  5. Garlick PJ. Assessment of the safety of glutamine and other amino acids. J Nutr 2001;131:2556S-61S.. PubMed
  6. Chapman AG. Glutamate and epilepsy. J Nutr 2000;130:1043S-5S.. PubMed
  7. Ziegler TR. Glutamine supplementation in cancer patients receiving bone marrow transplantation and high dose chemotherapy. J Nutr 2001;131:2578S-84S.. PubMed
  8. Laviano A, Molfino A, Lacaria MT, Canelli A, De Leo S, Preziosa I, Rossi Fanelli F. Glutamine supplementation favors weight loss in nondieting obese female patients. A pilot study. Eur J Clin Nutr. 2014 Nov;68(11):1264-6. PubMed
  9. Endari (l-glutamine) [package insert]. Torrance, CA: Emmaus Medical,Inc; 2017.
  10. Niihara Y, Miller ST, Kanter J, et al. A Phase 3 Trial of l-Glutamine in Sickle Cell Disease. N Engl J Med 2018;379(3):226-35. doi: 10.1056/NEJMoa1715971.
  11. Ogden HB, Child RB, Fallowfield JL, et al. Gastrointestinal Tolerance of Low, Medium and High Dose Acute Oral l-Glutamine Supplementation in Healthy Adults: A Pilot Study. Nutrients. 2020;12(10):2953. PubMed

See these in context on the Glutamine monograph →

Vitamin B6 32 references
  1. Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
  2. Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
  3. Geerling BJ, Dagnelie PC, Badart-Smook A, et al. Diet as a risk factor for the development of ulcerative colitis. Am J Gastroenterol 2000;95:1008-13. PubMed
  4. South M. Neonatal seizures after pyridoxine use -- reply. Lancet 1999;354:2083. PubMed
  5. 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
  6. Baxter P, Aicardi J. Neonatal seizures after pyridoxine use. Lancet 1999;354:2082-3. PubMed
  7. Bendich A, Cohen M. Vitamin B6 safety issues. Ann N Y Acad Sci 1990;585:321-30.
  8. Schaumburg H, Kaplan J, Windebank A. Sensory neuropathy from pyridoxine abuse. A new megavitamin syndrome. N Engl J Med 1983;309:445-8. PubMed
  9. Gordon N. Pyridoxine dependency: an update. Dev Med Child Neurol 1997;39:63-5. PubMed
  10. Lewis PJ. Pain in the hand and wrist. Pyridoxine supplements may help patients with carpal tunnel syndrome. BMJ 1995;310:1534. PubMed
  11. Kaufman G. Pyridoxine against amiodarone-induced photosensitivity (letter). Lancet 1984;1:51-2. PubMed
  12. Mulrow JP, Mulrow CD, McKenna WJ. Pyridoxine and amiodarone-induced photosensitivity. Ann Intern Med 1985;103:68-9. PubMed
  13. Kawada A, Kashima A, Shiraishi H, et al. Pyridoxine-induced photosensitivity and hypophosphatasia. Dermatology 2000;201:356-60.. PubMed
  14. Vasile A, Goldberg R, Kornberg B. Pyridoxine toxicity: report of a case. J Am Osteopath Assoc 1984;83:790-1. DOI
  15. Hansson O, Sillanpaa M. Pyridoxine and serum concentration of phenytoin and phenobarbitone. Lancet 1976;1:256. DOI
  16. Jansen T, Romiti R, Kreuter A, Altmeyer P. Rosacea fulminans triggered by high-dose vitamins B6 and B12. J Eur Acad Dermatol Venereol 2001;15:484-5..
  17. Chittumma P, Kaewkiattikun K, Wiriyasiriwach B. Comparison of the effectiveness of ginger and vitamin B6 for treatment of nausea and vomiting in early pregnancy: a randomized double-blind controlled trial. J Med Assoc Thai 2007;90:15-20.
  18. Hatzitolios, A., Iliadis, F., Katsiki, N., and Baltatzi, M. Is the anti-hypertensive effect of dietary supplements via aldehydes reduction evidence based? A systematic review. Clin Exp.Hypertens. 2008;30(7):628-639. PubMed
  19. Vasdev, S., Ford, C. A., Parai, S., Longerich, L., and Gadag, V. Dietary vitamin B6 supplementation attenuates hypertension in spontaneously hypertensive rats. Mol.Cell Biochem. 1999;200(1-2):155-162.
  20. de, Vogel S., Dindore, V., van, Engeland M., Goldbohm, R. A., van den Brandt, P. A., and Weijenberg, M. P. Dietary folate, methionine, riboflavin, and vitamin B-6 and risk of sporadic colorectal cancer. J Nutr 2008;138(12):2372-2378. PubMed
  21. Hagen, I., Nesheim, B. I., and Tuntland, T. No effect of vitamin B-6 against premenstrual tension. A controlled clinical study. Acta Obstet.Gynecol.Scand. 1985;64(8):667-670. PubMed
  22. Aybak, M., Sermet, A., Ayyildiz, M. O., and Karakilcik, A. Z. Effect of oral pyridoxine hydrochloride supplementation on arterial blood pressure in patients with essential hypertension. Arzneimittelforschung. 1995;45(12):1271-1273.
  23. Lal, K. J., Dakshinamurti, K., and Thliveris, J. The effect of vitamin B6 on the systolic blood pressure of rats in various animal models of hypertension. J Hypertens. 1996;14(3):355-363. PubMed
  24. Lauritzen CH, Reuter HD, Repges R, Bohnert K, and Schmidt U. Treatment of premenstrual tension syndrome with Vitex agnus castus. Controlled, double-blind study versus pyridoxine. Phytomed 1997;4(3):183-189. PubMed
  25. Fonseca VA, Lavery LA, Thethi TK, et al. Metanx in type 2 diabetes with peripheral neuropathy: A randomized trial. Am J Med 2013;126(2):141-9. PubMed
  26. Hankey GJ, Eikelboom JW, Yi Q, et al. Treatment with B vitamins and incidence of cancer in patients with previous stroke or transient ischemic attack: Results of a randomized placebo-controlled trial. Stroke 2012;43(6):1572-7. PubMed
  27. Hoyer-Kuhn H, Kohbrok S, Volland R, Franklin J, Hero B, Beck BB, Hoppe B. Vitamin B6 in primary hyperoxaluria I: first prospective trial after 40 years of practice. Clin J Am Soc Nephrol. 2014 Mar;9(3):468-77. PubMed
  28. Mahmoud A, Tabassum S, Al Enazi S, et al. Amelioration of levetiracetam-induced behavioral side effects by pyridoxine. A randomized double blind controlled study. Pediatr Neurol 2021;119:15-21. PubMed
  29. Gupta M, Gallante B, Bamberger JN, et al. Prospective randomized evaluation of idiopathic hyperoxaluria treatments. J Endourol 2021;35(12):1844-1851. PubMed
  30. Li H, Chen M, Liang S, et al. Excessive vitamin B6 during treatment is related to poor prognosis of patients with nasopharyngeal carcinoma: A U-shaped distribution suggests low dose supplement. Clin Nutr 2021;40(4):2293-2300. PubMed
  31. Tanigawa J, Nabatame S, Tominaga K, et al. High-dose pyridoxine treatment for inherited glycosylphosphatidylinositol deficiency. Brain Dev 2021;43(6):680-687. PubMed
  32. Committee on Practice Bulletins-Obstetrics. ACOG Practice Bulletin No. 189: Nausea And Vomiting Of Pregnancy. Obstet Gynecol. 2018;131(1):e15-e30. PubMed

See these in context on the Vitamin B6 monograph →

Beta-alanine 13 references
  1. Harris RC, Tallon MJ, Dunnett M, et al. The absorption of orally supplied beta-alanine and its effect on muscle carnosine synthesis in human vastus lateralis. Amino Acids 2006;30:279-89.
  2. Hill CA, Harris RC, Kim HJ, et al. Influence of beta-alanine supplementation on skeletal muscle carnosine concentrations and high intensity cycling capacity. Amino Acids 2007;32:225-33.
  3. Bellinger PM, Minahan CL. The effect of ß-alanine supplementation on cycling time trials of different length. Eur J Sport Sci 2016;16(7):829-36.
  4. Chung W, Shaw G, Anderson ME, et al. Effect of 10 week beta-alanine supplementation on competition and training performance in elite swimmers. Nutrients 2012;4(10):1441-53. PubMed
  5. Glenn JM, Gray M, Stewart R, et al. Incremental effects of 28 days of beta-alanine supplementation on high-intensity cycling performance and blood lactate in masters female cyclists. Amino Acids 2015;47(12):2593-600. PubMed
  6. Gross M, Bieri K, Hoppeler H, Norman B, Vogt M. Beta-alanine supplementation improves jumping power and affects severe-intensity performance in professional alpine skiers. Int J Sport Nutr Exerc Metab 2014;24(6):665-73. PubMed
  7. Howe ST, Bellinger PM, Driller MW, Shing CM, Fell JW. The effect of beta-alanine supplementation on isokinetic force and cycling performance in highly trained cyclists. Int J Sport Nutr Exerc Metab 2013;23(6):562-70. PubMed
  8. Sweeney KM, Wright GA, Glenn Brice A, Doberstein ST. The effect of beta-alanine supplementation on power performance during repeated sprint activity. J Strength Cond Res 2010;24(1):79-87.
  9. Décombaz J, Beaumont M, Vuichoud J, Bouisset F, Stellingwerff T. Effect of slow-release ß-alanine tablets on absorption kinetics and paresthesia. Amino Acids 2012;43(1):67-76. Erratum in: Amino Acids 2013;45(4):1015.
  10. Stellingwerff T, Anwander H, Egger A, et al. Effect of two ß-alanine dosing protocols on muscle carnosine synthesis and washout. Amino Acids 2012;42(6):2461-72. PubMed
  11. da Silva RP, de Oliveira LF, Saunders B, et al. Effects of ß-alanine and sodium bicarbonate supplementation on the estimated energy system contribution during high-intensity intermittent exercise. Amino Acids. 2019;51(1):83-96. PubMed
  12. Varanoske AN, Hoffman JR, Church DD, et al. Comparison of sustained-release and rapid-release ß-alanine formulations on changes in skeletal muscle carnosine and histidine content and isometric performance following a muscle-damaging protocol. Amino Acids. PubMed
  13. Perim P, Gobbi N, Duarte B, et al. Beta-alanine did not improve high-intensity performance throughout simulated road cycling. Eur J Sport Sci 2021. PubMed

See these in context on the Beta-alanine monograph →

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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

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