21st Century Kalos & Splendor™ Collagen Peptides, Unflavored, 10.6 oz (300 g) supplement bottle
21st Century

Kalos & Splendor™ Collagen Peptides, Unflavored, 10.6 oz (300 g)

What We Researched
4 active ingredients analyzed · 2 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
87
Product Score Good
76
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Collagen Peptides (from Bovine) 20 g **
Bioavailability Excellent

Absorption Rating

  • Collagen Peptides (from Bovine) Good
Other Ingredients Fair

Fillers & Additives

No inactive ingredient data available.

Efficacy Excellent

Dosage Analysis

  • Collagen Peptides (from Bovine) 20 g Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 70
Protein 18 g 36%†
Sodium 80 mg 3%
Collagen Peptides (from Bovine) 20 g **

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$19$18$17$16$15 Mar 12 $17.00
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
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Frequently Asked Questions
Is 21st Century Kalos & Splendor™ Collagen Peptides, Unflavored a good supplement?

21st Century Kalos & Splendor™ Collagen Peptides, Unflavored, 10.6 oz (300 g) received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 4 active ingredients with 15 servings per container. 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 Kalos & Splendor™ Collagen Peptides, Unflavored?

21st Century Kalos & Splendor™ Collagen Peptides, Unflavored contains 4 active ingredients: Calories (70), Protein (18 g), Sodium (80 mg), Collagen Peptides (from Bovine) (20 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is 21st Century Kalos & Splendor™ Collagen Peptides, Unflavored safe to take?

21st Century Kalos & Splendor™ Collagen Peptides, Unflavored, 10.6 oz (300 g) has been analyzed for ingredient safety across all its components. 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.

What is collagen?

Collagen is a topic many supplement consumers ask about. In the context of dietary supplements, understanding collagen helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

What is collagen good for?

Collagen Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding collagen good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

Do collagen tablets work?

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.