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Dietary supplement

Taurine 500 mg Ingredients & Drug Interactions

by Douglas Cooper Co.

Taurine 500 mg label
See full label image
Capsule Category: Non-nutrient/non-botanical
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 Taurine 500 mg 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

Taurine 500 mg is a dietary supplement by Douglas Cooper Co. with 1 active ingredient. Its ingredients are commonly taken for exercise performance and endurance, heart health, energy support.Based on those ingredients, 173 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Taurine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Taurine 500 mg by Douglas Cooper Co.

Ask about any prescription or over-the-counter medication and we check it for interactions with Taurine 500 mg by Douglas Cooper Co. — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Taurine 500 mg by Douglas Cooper Co.

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 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: taurine 500 mg per capsule. Taurine is an amino acid your body makes naturally and also gets from foods like meat and fish.

The capsules also contain rice flour and gelatin as inactive ingredients.

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: cell membrane stability and nervous system support.
  • We looked for evidence on: Congestive heart failure (CHF), Hyperlipidemia, Hypertension, Physical performance, Exercise-induced muscle soreness, Fatigue — and 4 related terms.
  • The strongest evidence on file: Taurine is rated "Possibly Effective" for Congestive heart failure (CHF) (Natural Medicines).
  • Also on file: Taurine is rated "Insufficient Reliable Evidence To Rate" for Diabetes, Exercise-induced muscle soreness, Fatigue, Hyperlipidemia, and more.

The evidence for taurine is mixed. It's rated possibly effective for hepatitis and heart failure (congestive heart failure), meaning some clinical evidence supports its use for these conditions, though more research would strengthen that support.

For obesity, taurine is rated possibly ineffective based on the data we hold.

The evidence, ingredient by ingredient Taurine

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 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Taurine is generally well tolerated when taken in typical doses for up to one year. The most common side effects are mild and digestive — constipation, diarrhea, and indigestion.

Rare serious effects include allergic reactions, particularly in people with a history of allergies to sulfonamides or sulfites; if you have those allergies, talk with your pharmacist before taking this. Long-term safety beyond one year isn't well established, so use this supplement only under medical guidance if you plan longer-term use.

Side effects, ingredient by ingredient Taurine

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?
  • 1 of the 1 matched ingredient can interact with medications — Taurine.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: lithium.
  • For scale: 173 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.

Check this before taking taurine if you're on blood pressure-lowering medications or lithium. Both are Moderate severity interactions.

Taurine can lower blood pressure further and may raise lithium levels in your blood.

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.

Taurine might help with heart failure or hepatitis under professional supervision. If you take blood pressure medication or lithium, you'll need to check this supplement first — it can affect how both work.

Chat with your pharmacist before starting, especially if you have sulfonamide or sulfite allergies or plan to use it long-term.

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

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated May 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 Taurine 500 mg, straight from the product label.

Brand Douglas Cooper Co.
Net contents 100 Capsule(s)
Market status On market
Date entered into DSLD May 22, 2021
DSLD ID 247417
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses 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 Taurine 500 mg by Douglas Cooper Co., 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
100
IngredientAmount% DV
Taurine500 mg--

Other ingredients: Rice Flour, Gelatin

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

Suggested Usage: Take 1 capsule 1 to 4 times daily with juice or water, preferably between meals.

Formulation

Taurine is a conditionally essential amino acid that is not utilized for protein synthesis, but is mainly found free in most tissues, especially throughout the nervous system. It functions in tissues by stabilizing cell membranes and aiding the transport of potassium, sodium, calcium and magnesium in and out of cells. Taurine helps to generate and regulate nerve impulses and supports the maintenance of normal fluid balance; it is also used by the body in visual pathways, as well as in the brain and nervous system, where it works together with glycine and GABA as a neurotransmitter.

Supports a calm mood

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Natural color variation may occur in this product.

Non-GMO

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.

Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication (including anti-hypertensive and diuretic medications), or have a medical condition (including hypotension).

Keep out of reach of children.

To report a serious adverse event, or for product information, contact 1-800-234-8686

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Do not eat freshness packet. Keep in bottle.

General Statements

Douglas Cooper Co. "Trace Minerals Make the Difference" Since 1950

Please recycle.

FDA Statement of Identity

Dietary Supplement

Storage

Store in a cool, dry place after opening.

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

See for yourself

Taurine 500 mg by Douglas Cooper Co. label

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

Taurine 500 mg 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 Taurine 500 mg by Douglas Cooper Co.

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container100 Amounts shown are per serving.

Taurine

Interacts with
173 drugs
500 mg per serving

Taurine is an amino acid your body makes naturally and that you also get from animal foods. It is widely used in energy drinks and sports supplements,...

Taurine monograph & interactions

Other (inactive) ingredients: Rice Flour, Gelatin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Taurine 500 mg by Douglas Cooper Co. Drug Interactions

Want to check YOUR meds against Taurine 500 mg?

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
173Drugs
173 Moderate

Ingredients driving the most interactions

Taurine 173

Individual Drug Interactions

The ingredients in Taurine 500 mg interact with 173 drugs. Click any drug to see the details.

1 of the 1 ingredient in Taurine 500 mg interact with drugs. Each result below shows which ingredient is responsible. Taurine

Each ingredient & the kinds of drugs it affects

For each ingredient in Taurine 500 mg 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.

Taurine2 drug types · 173 drugs

Antihypertensive Drugs

Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Some clinical evidence suggests that taurine can reduce both systolic and diastolic blood pressure.

Likelihood Probable Evidence D
Lithium

Theoretically, taurine might reduce excretion and increase plasma levels of lithium.
Taurine is thought to have diuretic properties, which might reduce the excretion of lithium.

Likelihood Probable Evidence D
Taurine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Taurine 500 mg, from the product label.

Douglas Cooper Co.

See all Douglas Cooper Co. products
Name
Douglas Cooper Co.
Street Address
377 Ridge Point Dr
City
Carmel
State
IN
ZipCode
46032
Phone Number
1-800-234-8686
Pharmacist Counseling Corner

Taurine 500 mg by Douglas Cooper Co.: Common Questions

Does Taurine 500 mg by Douglas Cooper Co. interact with any medications?
Yes. Based on its ingredients, Taurine 500 mg has a known interaction with 173 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Taurine 500 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism 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.
Is taurine safe during pregnancy and breastfeeding?
Taurine is rated Likely Safe in pregnancy and lactation. Taurine occurs naturally in breast milk. That said, supplement safety data is limited, so talk with your doctor or pharmacist about whether supplementing makes sense for your situation.
What side effects might I experience?
Most people tolerate taurine well. The most common side effects are digestive — constipation, diarrhea, or indigestion. Serious allergic reactions are rare but can happen, especially if you're allergic to sulfonamides or sulfites.
How long is it safe to take taurine?
Taurine is generally well tolerated for up to one year at typical doses. Long-term safety beyond that isn't well established, so if you're thinking of taking it longer, do so only under medical guidance.
Does taurine actually work for heart failure?
Some clinical evidence suggests taurine may help with congestive heart failure, so it's rated possibly effective. But more research is needed to be certain. Always use it alongside your doctor's prescribed heart treatments.
Why does this product interact with so many medications?
The 171 interactions span two drug types: blood pressure medications and lithium. Taurine's effects on blood pressure and how your body handles certain minerals mean these medications need attention, but that doesn't mean you can't take it — you just need to check first.

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

Not sure if Taurine 500 mg 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.

Taurine 500 mg label
Go deeper

The Full Monographs Behind Taurine 500 mg’s Ingredients

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

Herb & supplement monograph

Taurine

Interacts with 173 drugs

Taurine is an amino acid your body makes naturally and that you also get from animal foods. It is widely used in energy drinks and sports supplements, and short-term use appears generally sa...

Read the full Taurine monograph →
Sources

Sources & How We Checked

Taurine 500 mg'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 21 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.

Taurine 21 references
  1. Ahmad S, Robertson HT, Golper TA, et al. Multicenter trial of L-carnitine in maintenance hemodialysis patients. II. Clinical and biochemical effects. Kidney Int 1990;38:912-8. PubMed
  2. Machado-Vieira R, Viale CI, Kapczinski F. Mania associated with an energy drink: the possible role of caffeine, taurine, and inositol. Can J Psychiatry 2001;46:454-5. PubMed
  3. Obermann M, Schorn CF, Mummel P, et al. Taurine induced toxic encephalopathy? Clin Neurol Neurosurg 2006;108:812-3. PubMed
  4. Bichler, A., Swenson, A., and Harris, M. A. A combination of caffeine and taurine has no effect on short term memory but induces changes in heart rate and mean arterial blood pressure. Amino Acids 2006;31(4):471-476. PubMed
  5. Iyadurai, S. J. and Chung, S. S. New-onset seizures in adults: possible association with consumption of popular energy drinks. Epilepsy Behav 2007;10(3):504-508. PubMed
  6. Berger, A. J. and Alford, K. Cardiac arrest in a young man following excess consumption of caffeinated "energy drinks". Med J Aust. 1-5-2009;190(1):41-43. PubMed
  7. Worthley, M. I., Prabhu, A., De, Sciscio P., Schultz, C., Sanders, P., and Willoughby, S. R. Detrimental effects of energy drink consumption on platelet and endothelial function. Am J Med 2010;123(2):184-187. PubMed
  8. Morchon, Simon D. and Perez Castrillon, J. L. [Hypoglycemia by intake of taurine]. Rev.Clin Esp. 2010;210(1):49.
  9. Livshits, Z., Hoffman, R. S., Hymes, K. B., and Nelson, L. S. If vitamins could kill: massive hemolysis following naturopathic vitamin infusion. J Med Toxicol. 2011;7(3):224-226. PubMed
  10. Schoffl, I., Kothmann, J. F., Schoffl, V., Rupprecht, H. D., and Rupprecht, T. "Vodka energy": too much for the adolescent nephron? Pediatrics 2011;128(1):e227-e231. PubMed
  11. Calabro, R. S., Italiano, D., Gervasi, G., and Bramanti, P. Single tonic-clonic seizure after energy drink abuse. Epilepsy Behav 2012;23(3):384-385. PubMed
  12. Fujita, T., Ando, K., Noda, H., Ito, Y., and Sato, Y. Effects of increased adrenomedullary activity and taurine in young patients with borderline hypertension. Circulation 1987;75(3):525-532. PubMed
  13. Darling, P. B., Lepage, G., Leroy, C., Masson, P., and Roy, C. C. Effect of taurine supplements on fat absorption in cystic fibrosis. Pediatr Res 1985;19(6):578-582. PubMed
  14. Fukuyama, Y. and Ochiai, Y. Therapeutic trial by taurine for intractable childhood epilepsies. Brain Dev. 1982;4(1):63-69. PubMed
  15. Franconi, F., Bennardini, F., Mattana, A., Miceli, M., Ciuti, M., Mian, M., Gironi, A., Anichini, R., and Seghieri, G. Plasma and platelet taurine are reduced in subjects with insulin-dependent diabetes mellitus: effects of taurine supplementation. Am.J. DOI
  16. Stohs SJ, Miller M. A case study involving allergic reactions to sulfur-containing compounds including, sulfite, taurine, acesulfame potassium and sulfonamides. Food Chem Toxicol. 2014 Jan;63:240-3. PubMed
  17. Sun Q, Wang B, Li Y, Sun F, et al. Taurine supplementation lowers blood pressure and improves vascular function in prehypertension: randomized, double-blind, placebo-controlled study. Hypertension 2016 Mar;67(3):541-9. PubMed
  18. Jang ES, Hwang SH, Kim JW, Jeong SH. Effectiveness of 4-week oral taurine treatment for muscle cramps in patients with liver cirrhosis: a single-arm pilot study. Yonsei Med J 2021;62(1):21-8. PubMed
  19. Guan L, Miao P. The effects of taurine supplementation on obesity, blood pressure and lipid profile: A meta-analysis of randomized controlled trials. Eur J Pharmacol 2020;885:173533. PubMed
  20. Higgins JP, Liras GN, Liras IN, et al. Energy Drink Effects on Hemodynamics and Endothelial Function in Young Adults. Cardiology. 2021;146(2):258-262. PubMed
  21. Pallangyo P, Bhalia SV, Komba M, et al. Acute Myocardial Infarction Following the Consumption of Energy Drink in a 28-Year-Old Male: A Case Report. J Investig Med High Impact Case Rep. 2023 Jan-Dec;11:23247096231168811. PubMed

See these in context on the Taurine monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

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.

© 2021 Therapeutic Research Center, LLC

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