What is the recommended dosage for Collagen Peptides?

General: 2,500-5,000 mg/day; Skin Health: 2,500-10,000 mg/day hydrolyzed collagen peptides

What are the side effects of Collagen Peptides?

Potential side effects include: Mild bloating or digestive discomfort, Unpleasant aftertaste (some marine collagen), Rare allergic reactions (fish or shellfish-derived), Possible calcium elevation (shark cartilage-derived).

What are collagen peptides and how may they support skin health?

Collagen peptides (hydrolyzed collagen) are small protein fragments derived from animal collagen that can be absorbed in the gut. Multiple systematic reviews of RCTs have shown that oral collagen supplementation improves skin hydration, elasticity, and reduces wrinkle depth. The evidence base for skin benefits is relatively strong among supplements.

What dosage of collagen peptides has been studied for skin benefits?

Clinical trials have used 2.5–10 grams of hydrolyzed collagen peptides per day, with most studies using 5–10 grams daily for 8–12 weeks. Both types I and II collagen have been studied. Specific peptide fractions (Verisol, Peptan) have been used in well-designed RCTs. Benefits have been observed as early as 4 weeks.

What are the potential side effects of collagen peptide supplements?

Collagen peptides are generally well tolerated. Mild digestive symptoms including bloating and fullness may occur. Marine-derived collagen should be avoided by individuals with fish allergies. Bovine-derived collagen is unsuitable for those with beef allergies. Quality concerns include potential heavy metal contamination in some products.

Collagen Peptides

collagen_protein

Also known as: Hydrolyzed Collagen, Collagen Hydrolysate, Collagen Protein, Marine Collagen, Bovine Collagen

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About

Hydrolyzed collagen provides bioactive peptides — primarily Pro-Hyp and Hyp-Gly — that stimulate fibroblast proliferation and upregulate endogenous type I and type III collagen synthesis, hyaluronic acid production, and elastin expression in the dermal extracellular matrix. A 2024 systematic review of 26 RCTs found oral collagen peptide supplementation (2,500-10,000 mg/day for 4-24 weeks) significantly improved skin hydration, elasticity, and reduced wrinkle depth compared to placebo.

How It Works

Hydrolyzed collagen provides bioactive peptides (primarily Pro-Hyp and Hyp-Gly) that stimulate fibroblast proliferation and upregulate endogenous type I and type III collagen synthesis, hyaluronic acid production, and elastin expression in the dermal extracellular matrix.

Evidence For Conditions

Condition	Grade	Studies	Participants
Aging Skin & Wrinkles	A	26	1721	View →
Collagen Loss	A	19	1125	View →
Dry Skin	B	14	920	View →
Stretch Marks	D	2	120	View →
Cellulite	D	2	105	View →

Side Effects

Mild bloating or digestive discomfort
Unpleasant aftertaste (some marine collagen)
Rare allergic reactions (fish or shellfish-derived)
Possible calcium elevation (shark cartilage-derived)

Drug & Supplement Interactions

No significant drug interactions documented
May theoretically interact with calcium supplements (some sources contain calcium)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Elastin Hyaluronic Acid Keratin

Quick Facts

Dosage: General: 2,500-5,000 mg/day; Skin_Health: 2,500-10,000 mg/day hydrolyzed collagen peptides
Forms: powder capsule liquid gummy
Natural Sources: Bone broth, Chicken skin, Fish skin and scales, Pork skin, Gelatin
Upper Limit: Not established; well-tolerated up to 15,000 mg/day in trials
Best Time: Can be taken any time; some prefer on an empty stomach for absorption

Evidence Summary

Aging Skin & Wrinkles A

Collagen Loss A

Dry Skin B

Stretch Marks D

Cellulite D

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.