Doctor's Best Collagen Types 1 and 3 & Vitamin C supplement bottle
Doctor's Best

Collagen Types 1 and 3 & Vitamin C Review

What We Researched
4 active ingredients analyzed · 8 inactive ingredients decoded · 1 brand certification checked · Last updated: Aug 2026
91
Product Score Excellent
61
Brand Score Fair

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

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Protein (from hydrolyzed collagen Types 1 and 3) 3 g
Vitamin C (as calcium ascorbate) 30 mg 33%
Hydrolyzed Collagen Types 1 and 3 (3000 mg) 3 g
Bioavailability Excellent

Absorption Rating

  • Protein (from hydrolyzed collagen Types 1 and 3) Good
  • Vitamin C (as calcium ascorbate) Good
  • Hydrolyzed Collagen Types 1 and 3 (3000 mg) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Croscarmellose Sodium
  • Hypromellose
  • Vegetable Magnesium Stearate
  • Magnesium Stearate
  • Stearic Acid
  • Purified Water
  • Water
Efficacy Good

Dosage Analysis

  • Protein (from hydrolyzed collagen Types 1 and 3) 3 g Effective
  • Vitamin C (as calcium ascorbate) 30 mg Under-dosed
  • Hydrolyzed Collagen Types 1 and 3 (3000 mg) 3 g Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Protein (from hydrolyzed collagen Types 1 and 3) 3 g
Vitamin C (as calcium ascorbate) 30 mg 33%
Hydrolyzed Collagen Types 1 and 3 (3000 mg) 3 g

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.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Water Safe

Dissolves and carries water-soluble ingredients.

Brand Trust Report
Doctor's Best

Founded 1990 · Tustin, California, USA · 351 products · doctorsbest.com

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

3 incidents
Lawsuit False advertising and mislabeling of glucosamine supplements.2022Source
Recall Red Yeast Rice2014-06-26Source
Recall Red Yeast Rice 600 mg Capsules, 120-count bottles2014-06-24Source
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Frequently Asked Questions
Is Doctor's Best Collagen Types 1 and 3 & Vitamin C a good supplement?

Doctor's Best Collagen Types 1 and 3 & Vitamin C received a product quality score of 91/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 4 active ingredients with 180 servings per container. All 8 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Doctor's Best, holds a brand trust score of 61/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Doctor's Best Collagen Types 1 and 3 & Vitamin C?

Doctor's Best Collagen Types 1 and 3 & Vitamin C contains 4 active ingredients: Calories (10), Protein (from hydrolyzed collagen Types 1 and 3) (3 g), Vitamin C (as calcium ascorbate) (30 mg), Hydrolyzed Collagen Types 1 and 3 (3000 mg) (3 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Doctor's Best Collagen Types 1 and 3 & Vitamin C safe to take?

Doctor's Best Collagen Types 1 and 3 & Vitamin C has been analyzed for ingredient safety across all its components. All 8 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Doctor's Best a trustworthy supplement brand?

Doctor's Best receives a brand trust score of 61/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1990 and headquartered in Tustin, California, USA, the company offers 351 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Doctor's Best has 3 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 150,000 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 150,000 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 150,000 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 — 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.