BCAA Powder Ingredients & Drug Interactions
What is this page for?
First and foremost: checking BCAA Powder 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
BCAA Powder is a dietary supplement by Precision Engineered with 4 active ingredients. Its ingredients are commonly taken for morning sickness in pregnancy, premenstrual syndrome (pms), preventing or treating b6 deficiency.Based on those ingredients, 210 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin B6. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against BCAA Powder by Precision Engineered
Ask about any prescription or over-the-counter medication and we check it for interactions with BCAA Powder by Precision Engineered — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of BCAA Powder by Precision Engineered
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.
What’s inside
Full disclosure
This product has 4 active ingredients: three branched-chain amino acids (leucine, isoleucine, and valine — often called BCAAs) and vitamin B6. BCAAs are amino acids your body uses to build and repair muscle.
Vitamin B6 plays a role in protein metabolism and nervous system function. The powder also contains pyridoxine hydrochloride as an inactive ingredient.
Does it work?
Strong evidence
We have no effectiveness data on file for the BCAA blend itself — the evidence isn't established in our records. Vitamin B6, one of the active ingredients, has established effectiveness for sideroblastic anemia and vitamin B6 deficiency, and is likely effective for elevated homocysteine (hyperhomocysteinemia).
It's possibly effective for pregnancy-related nausea and vomiting, though it should only be used under a doctor's supervision for that.
How safe is it?
Well-documented data
Vitamin B6 is generally well tolerated at doses under 100 mg daily. At normal dietary amounts and standard supplement doses, it's considered safe.
The main concern is high doses over extended periods, which can damage nerves (a condition called sensory neuropathy) — this risk is highest with daily doses over 1,000 mg or total lifetime doses of 1,000 grams or more, though it can occur with lower doses too. Common side effects at any dose are rare but may include headache, nausea, heartburn, or loss of appetite.
We don't have pregnancy or breastfeeding safety data on file for the amino acids in this product.
Meds to double-check
Moderate interaction found
Check with your pharmacist if you take blood pressure medication, amiodarone (Cordarone), seizure medications like phenobarbital (Luminal) or phenytoin (Dilantin), or levodopa. These are the medication types with documented interactions with vitamin B6 in this product.
The bottom line
Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
If you take blood pressure medication, a heart rhythm drug like amiodarone, or seizure medications, check your exact doses with your pharmacist before starting this product. The BCAA blend itself may help with muscle recovery, but we don't have established evidence on that.
If you're pregnant or breastfeeding, talk to your doctor or pharmacist before use.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 24, 2013.
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
General information
Key facts about BCAA Powder, straight from the product label.
| Brand | Precision Engineered |
|---|---|
| Barcode (UPC) | 766443312017 |
| Net contents | 0.66 lb; 10.58 oz.; 300 g |
| Market status | On market |
| Date entered into DSLD | May 24, 2013 |
| DSLD ID | 21204 |
| Product type | Other Combinations |
| Supplement form | Powder |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar Free |
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 BCAA Powder by Precision Engineered, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin B6 | 16 mg | 800% |
| L-Leucine | 2250 mg | -- |
| L-Isoleucine | 1250 mg | -- |
| L-Valine | 1500 mg | -- |
Other ingredients: Pyridoxine Hydrochloride
Tap any ingredient to jump to its full detail below.
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.
General Statements
Precision Engineered has pioneered the manufacture of premium sports nutrition supplements. Our commitment to quality is the highest in our industry. Every product undergoes rigorous analysis for purity, potency, safety and freshness. We guarantee it!
Contents are sold by weight. Some settling may occur.
Enhanced with high-potency Vitamin B-6, which plays an essential role in BCAA metabolism for optimal usage.*
Clinically Studied BCAA Ratio • Helps Build Protein* • Genetic Protein Regulator*
BCAAs may be the most important aminos for athletes and bodybuilders as they are directly involved in protein synthesis at the genetic level.* BCAAs can also be broken down and used as an energy source to fuel exercise as needed.* BCAA Powder supplies a precise, clinically studied ratio of Leucine, Valine and Isoleucine (45/30/25). BCAA Powder can be taken after training or athletic competition to support recovery and help you reach your fitness goals.*
Seals/Symbols
QA QUALITY ASSURED
PRECISION ENGINEERED(R) HARDCORE SERIES
Formulation
No Artificial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.
- No Filler No Sugars
Precautions
WARNING: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.
Discontinue use and consult your doctor if any adverse reactions occur.
Not intended for use by persons under the age of 18. Keep out of reach of children.
Do not use if seal under cap is broken or missing.
Storage
Store at room temperature.
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.
Brand IP Statement(s)
(C) 2012 Precision Engineered Limited (USA)
General
PROD. # 31201 B31201 03A
Formula
Pure BCAA Powder
FDA Statement of Identity
DIETARY SUPPLEMENT POWDER
Suggested/Recommended/Usage/Directions
DIRECTIONS: Add one (1) scoop of powder to 6-8 ounces of cold water or milk and consume immediately after exercise. Take 2 servings per day. Use in conjunction with an intense daily exercise program and a balanced diet including an adequate caloric intake.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
BCAA Powder by Precision Engineered label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in BCAA Powder by Precision Engineered
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size5 Gram(s) Dosage formPowder Servings per container60 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.
Vitamin B6
Interacts with210 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 b...
Vitamin B6 monograph & interactionsL-Leucine
L-Isoleucine
L-Valine
Other (inactive) ingredients: Pyridoxine Hydrochloride. These complete the product’s ingredient list but are not active constituents.
BCAA Powder by Precision Engineered Drug Interactions
HelloPharmacist Interaction Report
Precision Engineered BCAA Powder contains vitamin B6, which has documented interactions with several medication types.
The most serious concern is with blood pressure medications (antihypertensive drugs): vitamin B6 may add to their effect and lower your blood pressure further, a Moderate-severity interaction.
Read the full breakdown — every affected drug type, severity by severity
Vitamin B6 also interacts Moderately with the heart rhythm drug amiodarone (Cordarone) — it may worsen the sun sensitivity that amiodarone can cause. At high doses, vitamin B6 may reduce how well two seizure medications work: phenobarbital (Luminal) and phenytoin (Dilantin).
There's also a Minor interaction with levodopa, though this doesn't apply if you take it with carbidopa (as in Sinemet).
The other three active ingredients in this product — L-leucine, L-isoleucine, and L-valine — we could not check for interactions. Altogether, these interactions span 208 individual medications.
Use the medication checker below to see if any of yours are on the list.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against BCAA Powder?
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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in BCAA Powder interact with 210 drugs. Click any drug to see the details.
1 of the 4 ingredients in BCAA Powder interact with drugs. Each result below shows which ingredient is responsible. Vitamin B6
FosinoprilMonopril
How Fosinopril interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Fosinopril interactionFosinopril, HydrochlorothiazideMonopril HCT
How Fosinopril, Hydrochlorothiazide interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Fosinopril, Hydrochlorothiazide interactionFosphenytoinCerebyx
How Fosphenytoin interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenytoin (dilantin) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenytoin.
Read the full Vitamin B6 + Fosphenytoin interactionFosphenytoin SodiumSesquient
How Fosphenytoin Sodium interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenytoin (dilantin) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenytoin.
Read the full Vitamin B6 + Fosphenytoin Sodium interactionFurosemideLasix
How Furosemide interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Furosemide interactionGuanabenz AcetateWytensin
How Guanabenz Acetate interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Guanabenz Acetate interactionGuanadrel SulfateHylorel
How Guanadrel Sulfate interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Guanadrel Sulfate interactionGuanethidine MonosulfateIsimil, Ismelin
How Guanethidine Monosulfate interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Guanethidine Monosulfate interactionGuanethidine, HydrochlorothiazideEsimil
How Guanethidine, Hydrochlorothiazide interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Guanethidine, Hydrochlorothiazide interactionGuanfacineTenex
How Guanfacine interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Guanfacine interactionHydralazineApresoline, Apresoline Injection, Dralzine, Hydralazine, Hylazin
How Hydralazine interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydralazine interactionHydralazine, HydrochlorothiazideApresazide, Apresoline-Esidrix
How Hydralazine, Hydrochlorothiazide interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydralazine, Hydrochlorothiazide interactionHydralazine, Hydrochlorothiazide, ReserpineSer-Ap-Es, Unipres, Uniserp
How Hydralazine, Hydrochlorothiazide, Reserpine interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydralazine, Hydrochlorothiazide, Reserpine interactionHydralazine, ReserpineSerpasil-Apresoline1, Serpasil-Apresoline2
How Hydralazine, Reserpine interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydralazine, Reserpine interactionHydrochlorothiazideAquazide, Aquazide H, Esidrix, HCTZ, Hydro, Hydro-D +3 more
How Hydrochlorothiazide interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide interactionHydrochlorothiazide, IrbesartanAvalide
How Hydrochlorothiazide, Irbesartan interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Irbesartan interactionHydrochlorothiazide, LabetalolTrandate HCT
How Hydrochlorothiazide, Labetalol interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Labetalol interactionHydrochlorothiazide, LisinoprilPrinzide, Zestoretic
How Hydrochlorothiazide, Lisinopril interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Lisinopril interactionHydrochlorothiazide, Losartan PotassiumHyzaar
How Hydrochlorothiazide, Losartan Potassium interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Losartan Potassium interactionHydrochlorothiazide, MethyldopaAldoril 15, Aldoril 25, Aldoril D30, Methazide
How Hydrochlorothiazide, Methyldopa interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Methyldopa interactionHydrochlorothiazide, MetoprololLopressor HCT
How Hydrochlorothiazide, Metoprolol interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Metoprolol interactionHydrochlorothiazide, MoexiprilUniretic
How Hydrochlorothiazide, Moexipril interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Moexipril interactionHydrochlorothiazide, PindololViskazide
How Hydrochlorothiazide, Pindolol interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Pindolol interactionHydrochlorothiazide, PropranololInderide
How Hydrochlorothiazide, Propranolol interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Propranolol interactionHydrochlorothiazide, QuinaprilAccuretic
How Hydrochlorothiazide, Quinapril interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Quinapril interactionHydrochlorothiazide, ReserpineHydropres, Serpasil-Esidrix, Serpasil-Esidrix #1, Serpasil-Esidrix #2
How Hydrochlorothiazide, Reserpine interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Reserpine interactionHydrochlorothiazide, SpironolactoneAldactazide, Aldactide 25, Aldactide 50, Spirozine
How Hydrochlorothiazide, Spironolactone interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Spironolactone interactionHydrochlorothiazide, TimololTimolide
How Hydrochlorothiazide, Timolol interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Timolol interactionHydrochlorothiazide, TriamtereneDyazide, Maxzide, Maxzide-25, Triamzide, Triazide
How Hydrochlorothiazide, Triamterene interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Triamterene interactionHydrochlorothiazide, ValsartanDiovan HCT
How Hydrochlorothiazide, Valsartan interacts with BCAA Powder — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Hydrochlorothiazide, Valsartan interactionEach ingredient & the kinds of drugs it affects
For each ingredient in BCAA Powder with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Vitamin B6
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.
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.
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.
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.
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.
Brand information
Manufacturer and brand details for BCAA Powder, from the product label.
Precision Engineered
See all Precision Engineered products- Name
- Precision Engineered Limited (USA)
- City
- Bohemia
- State
- NY
- ZipCode
- 11716
BCAA Powder by Precision Engineered: Common Questions
Does BCAA Powder by Precision Engineered interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What are BCAAs and what do they do?
Is this safe to take every day?
Can I use this if I'm pregnant?
What side effects might I see from vitamin B6?
Can I take this with my blood pressure medicine?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if BCAA Powder is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind BCAA Powder’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
BCAA Powder'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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 32 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.
Vitamin B6 32 references
- Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
- 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
- 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
- South M. Neonatal seizures after pyridoxine use -- reply. Lancet 1999;354:2083. PubMed
- 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
- Baxter P, Aicardi J. Neonatal seizures after pyridoxine use. Lancet 1999;354:2082-3. PubMed
- Bendich A, Cohen M. Vitamin B6 safety issues. Ann N Y Acad Sci 1990;585:321-30.
- Schaumburg H, Kaplan J, Windebank A. Sensory neuropathy from pyridoxine abuse. A new megavitamin syndrome. N Engl J Med 1983;309:445-8. PubMed
- Gordon N. Pyridoxine dependency: an update. Dev Med Child Neurol 1997;39:63-5. PubMed
- Lewis PJ. Pain in the hand and wrist. Pyridoxine supplements may help patients with carpal tunnel syndrome. BMJ 1995;310:1534. PubMed
- Kaufman G. Pyridoxine against amiodarone-induced photosensitivity (letter). Lancet 1984;1:51-2. PubMed
- Mulrow JP, Mulrow CD, McKenna WJ. Pyridoxine and amiodarone-induced photosensitivity. Ann Intern Med 1985;103:68-9. PubMed
- Kawada A, Kashima A, Shiraishi H, et al. Pyridoxine-induced photosensitivity and hypophosphatasia. Dermatology 2000;201:356-60.. PubMed
- Vasile A, Goldberg R, Kornberg B. Pyridoxine toxicity: report of a case. J Am Osteopath Assoc 1984;83:790-1. DOI
- Hansson O, Sillanpaa M. Pyridoxine and serum concentration of phenytoin and phenobarbitone. Lancet 1976;1:256. DOI
- 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..
- 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.
- 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
- 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.
- 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
- 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
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