GNC Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings) supplement bottle
GNC

Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings)

What We Researched
5 active ingredients analyzed · 11 inactive ingredients decoded · 5 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
42
Product Score Poor
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
d-Glucosamine Hydrochloride 750 mg
Chondroitin Sulfate Sodium 600 mg
TamaFlex™ (Tamarind (Tamarindus indica) Seed Extract & Tumeric (Curcuma longa) Rhizome Extract) 125 mg
UC-II® Type II Collagen Complex 20 mg
Hyaluronic Acid 2.5 mg
Bioavailability Good

Absorption Rating

  • d-Glucosamine Hydrochloride Fair
  • Chondroitin Sulfate Sodium Good
  • TamaFlex™ (Tamarind (Tamarindus indica) Seed Extract & Tumeric (Curcuma longa) Rhizome Extract) Poor
  • UC-II® Type II Collagen Complex Good
  • Hyaluronic Acid Good
Other Ingredients Poor

Fillers & Additives

  • Microcrystalline Cellulose
  • Croscarmellose Sodium
  • Hydroxypropyl Methylcellulose
  • Stearic Acid Vegetable Source
  • Titanium Dioxide (Mineral Whitener) High
  • Magnesium Stearate Vegetable Source
  • Polyethylene Glycol Low
  • Silicon Dioxide
  • Talc High
  • Hydroxypropylcellulose
  • Riboflavin (Color)
Efficacy Very Poor

Dosage Analysis

  • d-Glucosamine Hydrochloride 750 mg Under-dosed
  • Chondroitin Sulfate Sodium 600 mg Under-dosed
  • TamaFlex™ (Tamarind (Tamarindus indica) Seed Extract & Tumeric (Curcuma longa) Rhizome Extract) 125 mg Under-dosed
  • UC-II® Type II Collagen Complex 20 mg Under-dosed
  • Hyaluronic Acid 2.5 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
d-Glucosamine Hydrochloride 750 mg
Chondroitin Sulfate Sodium 600 mg
TamaFlex™ (Tamarind (Tamarindus indica) Seed Extract & Tumeric (Curcuma longa) Rhizome Extract) 125 mg
UC-II® Type II Collagen Complex 20 mg
Hyaluronic Acid 2.5 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.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Stearic Acid Vegetable Source Unknown
Titanium Dioxide (Mineral Whitener) Unknown
Magnesium Stearate Vegetable Source Unknown
Polyethylene Glycol Caution

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

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Talc Avoid

It is used to improve powder flow and prevent clumping.

Hydroxypropylcellulose Generally_safe

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

Riboflavin (Color) Safe

It is used as a natural food coloring.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$52$51$50$49$48 Mar 12 $49.99
GNC

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
GNC

Founded 1935 · Pittsburgh, Pennsylvania, USA · 200 products · gnc.com

Certifications

5 certifications
Informed Sport Verified Source
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Claimed
Related Supplements
Frequently Asked Questions
Is GNC Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings) a good supplement?

GNC Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings) received a product quality score of 42/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 5 active ingredients with 60 servings per container. Of the 11 inactive ingredients, 5 are rated safe and 1 are flagged for review. The manufacturer, GNC, holds a brand trust score of 88/100 with 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic.

What are the ingredients in GNC Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings)?

GNC Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings) contains 5 active ingredients: d-Glucosamine Hydrochloride (750 mg), Chondroitin Sulfate Sodium (600 mg), TamaFlex™ (Tamarind (Tamarindus indica) Seed Extract & Tumeric (Curcuma longa) Rhizome Extract) (125 mg), UC-II® Type II Collagen Complex (20 mg), Hyaluronic Acid (2.5 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is GNC Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings) safe to take?

GNC Tamaflex™ Complete Proven Joint Support* - 120 Caplets (60 Servings) has been analyzed for ingredient safety across all its components. Of 11 inactive ingredients, 5 are rated safe. 1 ingredient is flagged for review: 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 88/100 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 200 products in their lineup. They hold 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

How to take turmeric?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How to use turmeric?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How to take turmeric for inflammation?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

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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. 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.