21st Century Glucosamine Chondroitin, Triple Strength, 150 Tablets supplement bottle
21st Century

Glucosamine Chondroitin, Triple Strength, 150 Tablets

What We Researched
6 active ingredients analyzed · 12 inactive ingredients decoded · 2 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
86
Product Score Good
76
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Potassium 194 mg 4%
Glucosamine Sulfate•2KCI 1,500 mg **
Chondroitin Sulfate 1,200 mg **
Bioavailability Excellent

Absorption Rating

  • Potassium Good
  • Glucosamine Sulfate•2KCI Good
  • Chondroitin Sulfate Good
Other Ingredients Very Good

Fillers & Additives

  • Cellulose
  • Polyvinylpyrrolidone
  • Beet root
  • Calcium Carbonate
  • Magnesium Silicate
  • Magnesium Stearate
  • Polyethylene Glycol Low
  • Polyplasdone
  • Polysorbate Medium
  • Polyvinyl Alcohol
  • Silicon Dioxide
  • Stearic Acid
Efficacy Good

Dosage Analysis

  • Potassium 194 mg Under-dosed
  • Glucosamine Sulfate•2KCI 1,500 mg Effective
  • Chondroitin Sulfate 1,200 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Carbohydrate 2 g 1%†
Sodium 125 mg 5%
Potassium 194 mg 4%
Glucosamine Sulfate•2KCI 1,500 mg **
Chondroitin Sulfate 1,200 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Polyvinylpyrrolidone Generally_safe

It is used to bind ingredients together.

Beet root Unknown
Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Magnesium Silicate Generally_safe

It is used to improve powder flow and prevent clumping.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Polyethylene Glycol Caution

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

Polyplasdone Generally_safe

It is used to help tablets and capsules break down in the body.

Polysorbate Generally_safe

It is used to help mix oil and water-based ingredients.

Polyvinyl Alcohol Generally_safe

It is used as a coating for tablets or capsules.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$43$42$41$40$39 Mar 12 $41.00
iHerb

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

Brand Trust Report
21st Century

Founded 1991 · Tempe, Arizona, United States · 231 products · 21stcenturyvitamins.com/

Certifications

2 certifications
Consumerlab Verified
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Claimed Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

4 incidents
Prop 65 Lead2021-06-22Source
Recall Vitamin D3 5000 IU Tablets2021-05-19Source
Lawsuit False advertising of Glucosamine/Chondroitin supplements.2012Source
Prop 65 Lead2008-12-23Source
Related Supplements
Frequently Asked Questions
Is 21st Century Glucosamine Chondroitin, Triple Strength a good supplement?

21st Century Glucosamine Chondroitin, Triple Strength, 150 Tablets received a product quality score of 86/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 6 active ingredients with 75 servings per container. Of the 12 inactive ingredients, 5 are rated safe and 1 are flagged for review. The manufacturer, 21st Century, holds a brand trust score of 76/100 with 2 verified certifications including Consumerlab, Nsf Gmp.

What are the ingredients in 21st Century Glucosamine Chondroitin, Triple Strength?

21st Century Glucosamine Chondroitin, Triple Strength contains 6 active ingredients: Calories (10), Total Carbohydrate (2 g), Sodium (125 mg), Potassium (194 mg), Glucosamine Sulfate•2KCI (1,500 mg), Chondroitin Sulfate (1,200 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is 21st Century Glucosamine Chondroitin, Triple Strength safe to take?

21st Century Glucosamine Chondroitin, Triple Strength, 150 Tablets has been analyzed for ingredient safety across all its components. Of 12 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 21st Century a trustworthy supplement brand?

21st Century receives a brand trust score of 76/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1991 and headquartered in Tempe, Arizona, United States, the company offers 231 products in their lineup. They hold 2 verified certifications including Consumerlab, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: 21st Century has 4 historical regulatory incidents on record, which are factored into the trust score.

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.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.