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Collagen Peptides (Hydrolyzed)
Hydrolyzed peptides that rebuild skin elasticity, reduce joint pain, and strengthen bone density — results build over 8-12 weeks.
What the evidence says
Collagen appears to help in 5 of 5 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality meta-analyses and randomised trials published 2008–2026 with a typical study size of 85 participants.
Based on 35 studies · 6 meta-analyses · 23 RCTs · 7,017 total participants
Confidence
HighWhat the studies found
By outcome
See full supplement plans that include Collagen.
Collagen has an evidence score of 9/10 — very strong evidence based on 35 indexed studies, including 12 meta-analyses. Hydrolyzed peptides that rebuild skin elasticity, reduce joint pain, and strengthen bone density — results build over 8-12 weeks.
The commonly studied dose of Collagen is 10-15g. Research points to an estimated optimal dose around 15g, with a minimum effective dose near 5g. Individual response varies — start low and adjust.
Timing is flexible for Collagen — consistent daily use matters more than the time of day. Collagen peptides are well absorbed regardless of timing.
Hyaluronic Acid
Mostly mechanism / observationalHolds 1,000x its weight in water — oral supplementation improves skin hydration, reduces wrinkles, and supports joint comfort.
Astaxanthin
Mostly mechanism / observationalCarotenoid from algae that spans cell membranes for full-spectrum protection — studied for skin, eye health, and exercise recovery.
Last reviewed May 2026 · evidence from 39 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Collagen is the main structural protein in connective tissues. Hydrolyzed collagen peptides are broken down for better absorption. Research shows benefits for skin elasticity, joint pain, and bone density. Types I and III support skin; Type II supports cartilage. Results typically take 8-12 weeks to become noticeable.
Provides amino acids to build new collagen
May signal cells to produce more collagen
Supports joint cartilage maintenance
How Collagen works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
10-15g
Can be taken without food
| Form | Type |
|---|---|
| 🧪Hydrolyzed collagen peptides (powder) | Recommended |
| 💊Capsules | Alternative |
| 💧Liquid | Alternative |
| 💊Bone broth | Alternative |
Hydrolyzed forms are better absorbed. Marine collagen is pescatarian-friendly. Bovine collagen contains more Type I and III.
Minimum: 8 weeks
Optimal: 12 weeks
Cycling: Not required
Note: Can be added to coffee, smoothies, or food. Taking with vitamin C may enhance collagen synthesis. Timing doesn't significantly impact effectiveness.
You can get collagen from these foods and drinks. Doses are typical per-serving estimates — actual content varies by brand, brew, cooking, etc.
4.0 g per cup
1 cup long-simmered (8+ hr). Store-bought "bone broth" varies wildly; some are barely better than stock.
Meta-analysis of 23 RCTs (n=1474) showed high-quality studies had less effect than industry-funded studies. Benefits include improved skin elasticity and hydration. Hydrolyzed collagen peptides preferred for bioavailability.
Firmer, more hydrated skin
Less discomfort during movement
Reduced brittleness and breakage
Some experience fullness or mild digestive issues
Generally considered safe; choose high-quality sources
Check source — bovine, marine, chicken, or egg-based
Generally safe to combine with medications
Tip: Split doses or take with meals
Tip: Start with smaller dose
Tip: Choose unflavored or flavored options
Vitamin C is essential for collagen synthesis
Maximizes collagen production in the body
Both support joint health through different mechanisms
Comprehensive joint support
Both support hair, skin, and nail health
Comprehensive structural protein support
Both support skin structure
Comprehensive skin support - hydration and structure
Both support connective tissue
Sulfur for structure, collagen for building blocks
Silicon supports collagen cross-linking
Enhanced collagen structure and function
Collagen provides the organic scaffold (osteoid) onto which calcium hydroxyapatite crystals are deposited during bone formation.
Comprehensive bone matrix support — collagen for structural scaffold, calcium for mineral density
Collagen is generally well-tolerated and considered safe for most healthy adults at recommended doses. The most commonly reported side effects are feeling of fullness, digestive discomfort, bad taste (some products). Use caution if any of these apply to you: Allergy to source (fish, shellfish, eggs, beef); Phenylketonuria (some products contain phenylalanine).
Vitamin C
Probably helpsHumans cannot synthesize this vitamin — required for collagen production, immune cell function, and iron absorption; athletes need more.
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