GNC

Taurine 500 mg Review

Name: GNC Taurine 500 mg Review
Item: Taurine 500 mg
Author: GoodSupp

What We Researched

1 active ingredient analyzed · 14 inactive ingredients decoded · 10 brand certifications checked · Last updated: Aug 2026

Product Score Excellent

Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% DV
Taurine	500 mg	†

Bioavailability Excellent

Absorption Rating

Taurine Good

Other Ingredients Very Good

Fillers & Additives

Microcrystalline Cellulose
Dicalcium Phosphate
Hydroxypropylcellulose
Silicon Dioxide
Hydrogenated Vegetable Oil Medium
Croscarmellose Sodium
Stearic Acid
Ethylcellulose
Magnesium Stearate
Carnauba Wax
Triacetin
Diacetylated Monoglycerides
Oleic Acid
Polyethylene Glycol Low

Efficacy Excellent

Dosage Analysis

Taurine 500 mg Effective

Supplement Facts

Ingredient	Amount	% Daily Value
Taurine	500 mg	†

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Hydroxypropylcellulose Generally_safe

It is added to bind ingredients together and provide a smooth coating.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Hydrogenated Vegetable Oil Caution

It is used as a filler or binder.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Ethylcellulose Generally_safe

It is used as a coating to control the release of supplement ingredients.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Carnauba Wax Safe

Provides a glossy, protective coating on tablets.

Triacetin Generally_safe

It is used as a solvent or humectant.

Diacetylated Monoglycerides Unknown

Oleic Acid Safe

Polyethylene Glycol Caution

It is used as a binder, coating agent, or to improve solubility.

Brand Trust Report

Certifications

10 certifications

Informed Sport Verified Source

Nsf Certified For Sport Verified Source

Clean Label Project Verified Source

Labdoor Verified Source

Consumerlab Verified Source

Fda Gmp Inspections Verified Source

Usda Organic Verified Source

Vegan Certified Verified Source

Nsf Gmp Verified Source

Informed Choice Verified

Transparency

5 claims

Third Party Testing Claim — Verified Source

Testing Lab Disclosure — Verified Source

In House Testing — Claimed

Contains Proprietary Blend — True

Violation History

34 incidents

Prop 65 Not specified on product pageOngoingSource

Recall GNC Women's 30+ Vitapak2025-06-13Source

Recall GNC Women's 30+ Vitapak2025-06-09Source

Recall GNC Women's 30+ Vitapak2025-06-05Source

Recall GNC Women's 30+ Vitapak2025-04-25Source

Lawsuit Misrepresentation of the amount of elemental magnesium in 'Super Magnesium' supplements.2024Source

Lawsuit Mislabeled magnesium content in 'Super Magnesium' supplements.2024Source

Lawsuit Misrepresentation of magnesium content in 'Super Magnesium' supplements.2024Source

Recall GNC Women's Ultra Mega, Women's Ultra Mega Active, Women's Ultra Mega Energy and Metabolism, and Prenatal Formula with Iron2023-01-12Source

Lawsuit Falsely advertising 'Total Lean' protein bars as 'lean'.2023Source

Lawsuit Selling Vitamin E Skin Oil that was primarily composed of vegetable oil.2020Source

Lawsuit Selling Vitamin E Skin Oil that was mostly vegetable oil.2020Source

Prop 65 Lead, Cadmium2019-02-07Source

Prop 65 Lead and/or Cadmium2019-02-07Source

Prop 65 Lead, Cadmium2019-02-07Source

Prop 65 lead and/or cadmium2019-02-07Source

Lawsuit Deceptively labeling dietary supplements as if they have FDA approval.2019Source

Lawsuit Deceptively advertising fake markdowns online to mislead consumers into thinking items were on 'sale.'2019Source

Lawsuit Deceptively labeling dietary supplements regarding FDA approval and failing to include required disclaimers.2019Source

Lawsuit Using fake 'original' prices to deceive customers.2019Source

Recall Women's Iron Complete Dietary Supplement 60-count caplets2018-12-19Source

Prop 65 Lead2018-10-12Source

Recall Various GNC Women's Multivitamins2018-01-04Source

Recall GNC Women's Ultra Mega Time Release2016-11-18Source

Recall GNC Women's Ultra Mega Time Release 180-count2016-11-16Source

Lawsuit Knowingly selling products containing unlawful synthetic chemicals (picamilon, BMPEA, and acacia rigidula).2016Source

Lawsuit Unfair discontinuation of the Gold Card discount program.2016Source

Fda Warning Inclusion of unapproved dietary ingredient Beta-methylphenethylamine (BMPEA) in products.2015-04-01Source

Lawsuit Mislabeling of herbal supplements2015Source

Lawsuit Selling products containing illegal synthetic ingredients.2015Source

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Frequently Asked Questions

Is GNC Taurine 500 mg a good supplement?

GNC Taurine 500 mg received a product quality score of 95/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 14 inactive ingredients, 8 are rated safe and 2 are flagged for review. The manufacturer, GNC, holds a brand trust score of 96/100 with 10 verified certifications including Informed Sport, Nsf Certified For Sport, Clean Label Project, Labdoor.

What are the ingredients in GNC Taurine 500 mg?

GNC Taurine 500 mg contains 1 active ingredients: Taurine (500 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is GNC Taurine 500 mg safe to take?

GNC Taurine 500 mg has been analyzed for ingredient safety across all its components. Of 14 inactive ingredients, 8 are rated safe. 2 ingredients are flagged for review: Hydrogenated Vegetable Oil, Polyethylene Glycol. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is GNC a trustworthy supplement brand?

GNC receives a brand trust score of 96/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, USA, the company offers 1590 products in their lineup. They hold 10 verified certifications including Informed Sport, Nsf Certified For Sport, Clean Label Project, Labdoor. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: GNC has 34 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.