Collagen Peptides
Hydrolyzed Collagen / Collagen Hydrolysate / Type I/III Collagen Peptides
Enzymatically hydrolyzed collagen protein broken into bioactive dipeptides and tripeptides (primarily Pro-Hyp and Hyp-Gly). These fragments survive digestion, reach the bloodstream, and stimulate fibroblasts to produce new collagen, elastin, and hyaluronic acid. Supported by multiple RCTs for skin elasticity, joint pain reduction, and bone density.
Half-life
~4 hours (dipeptides Pro-Hyp and Hyp-Gly in blood)
Typical Dose
5–15 g/day oral
9/15Route
oral
Category
anti_aging
Evidence Overview
Strength of evidence across clinical, expert, and experimental lanes.
How Collagen Peptides is dosed in practice
Usually taken by mouth. Typical range: 5–15 g/day oral. Half-life: ~4 hours (dipeptides Pro-Hyp and Hyp-Gly in blood). Each card gives the dose, frequency and duration from one evidence lane: Clinical (human trials), Expert (practitioner protocols) or Experimental (early or animal data). These ranges describe what has been studied or used; they are not a prescription.
Work out the units to draw with the reconstitution calculator, how long a vial lasts with the vial duration calculator, and how levels fall between doses with the half-life calculator.
Skin elasticity improved with 2.5 or 5 g/day for 8 weeks (2014), and athletes' activity-related joint pain improved with 10 g/day for 24 weeks (2008).
- Randomized trial on skin (2014)
- Trial in athletes with joint pain (2008)
Widely recommended by dermatologists and sports medicine practitioners. Best taken on an empty stomach with vitamin C. Marine-sourced collagen has higher bioavailability than bovine. Type I/III for skin; Type II for joints.
- Dermatology and sports medicine clinical practice
- Sports neuroscience research synthesis on collagen supplementation
- Functional medicine practitioners — joint and skin protocols
Extremely popular supplement with overwhelmingly positive user reports for skin, hair, nails, and joint health. Some users report gut healing benefits. Debate exists over optimal source (marine vs bovine) and whether added vitamin C is necessary.
- Consumer surveys show high satisfaction rates for skin and nail improvements
- Amazon/supplement review aggregation data
- Reddit r/SkincareAddiction — collagen supplement threads
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Upgrade to ProSafety & Contraindications
- Known allergy to source protein (bovine, marine, porcine, or chicken)
- Histamine intolerance (some collagen sources are high in histamine)
- Renal impairment requiring protein restriction
Collagen Peptides: common questions
What is Collagen Peptides?
Enzymatically hydrolyzed collagen protein broken into bioactive dipeptides and tripeptides (primarily Pro-Hyp and Hyp-Gly). These fragments survive digestion, reach the bloodstream, and stimulate fibroblasts to produce new collagen, elastin, and hyaluronic acid. Supported by multiple RCTs for skin elasticity, joint pain reduction, and bone density.
How is Collagen Peptides dosed?
Collagen Peptides is usually taken by mouth. Typical range in DoseCraft's library: 5–15 g/day oral. Clinical (human trials): 2.5–10 g/day; Once daily; 8 weeks (skin) to 24 weeks (joints). Expert (practitioner protocols): 10–15 g/day oral; Once daily, preferably on empty stomach with vitamin C; Ongoing supplementation (minimum 8 weeks for visible results). Experimental (early or animal data): 10–20 g/day; Once or twice daily; Ongoing. These ranges describe what has been studied or used; they are not a prescription.
Is Collagen Peptides FDA-approved?
Collagen Peptides is sold as a dietary supplement, which the FDA does not approve for safety or effectiveness before sale.
What is the half-life of Collagen Peptides?
DoseCraft's library lists a half-life of ~4 hours (dipeptides Pro-Hyp and Hyp-Gly in blood). Half-life sets how often a compound is dosed and how long it takes to clear: about five half-lives.
Who should not use Collagen Peptides?
Listed contraindications: Known allergy to source protein (bovine, marine, porcine, or chicken); Histamine intolerance (some collagen sources are high in histamine); Renal impairment requiring protein restriction.
Free Guides for Collagen Peptides
Information is for educational purposes only. Always consult a licensed healthcare provider before starting any peptide regimen.
Page updated . How we grade evidence: methodology.