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Head-to-head evidence comparison — which supplement is right for you?
Collagen wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
6 of 6 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
5 of 5 studies with measurable effects showed benefit.
Top outcomes
10-15g
Any time of day, With vitamin C for enhanced synthesis
Hydrolyzed collagen peptides (powder)
500-1000mg root extract, 1-2x daily
With meals, Morning and evening
Root extract standardized to saponins
8-12 weeks
8-12 weeks
12 weeks
First week
4-12 weeks
4-8 weeks
1-2 weeks
Effects of Collagen Supplements on Skin Aging: A Systematic Review and Meta-Analysis
The American Journal of Medicine (2025) · Meta analysis · n=1474
23 RCTs with 1474 participants
Effect of collagen supplementation on knee osteoarthritis: an updated systematic review and meta-analysis of randomised controlled trials
Clinical and experimental rheumatology (2025) · Meta analysis · n=870
The meta-analysis revealed an overall significant improvement of both function [MD, -6.46 (95% CI -9.52, -3.40); I2=75%; p=0.00001] and pain scores [MD, -13.63 (95% CI -20.67, -6.58); I2=88%; p=0.00001], favouring collagen supplementation.
Impact of Collagen Peptide Supplementation in Combination with Long-Term Physical Training on Strength, Musculotendinous Remodeling, Functional Recovery, and Body Composition in Healthy Adults: A Systematic Review with Meta-analysis
Sports medicine (Auckland, N.Z.) (2024) · Meta analysis · n=768
This systematic review and meta-analysis represents the first comprehensive investigation into the effects of long-term CP supplementation combined with regular physical training on various aspects of musculoskeletal health in adults.
Oral galactagogues (natural therapies or drugs) for increasing breast milk production in mothers of non-hospitalised term infants
The Cochrane database of systematic reviews (2020) · Meta analysis · n=20
Only one study (metoclopramide) reported on the outcome of infant weight, finding little or no difference (mean difference (MD) 23.0 grams, 95% confidence interval (CI) -47.71 to 93.71; 1 study, 20 participants; low-certainty evidence).
Modulation of Various Pharmacological Pathways by Asparagus Saponins: Special Emphasis on Shatavarin-IV
Chemistry & biodiversity (2026) · Systematic review
Shatavarin-IV is regarded as the most important steroidal saponin responsible for most of the pharmacological effects of Shatavari.
Shatavari (Asparagus racemosus Willd) root extract for postpartum lactation: A randomised, double-blind, placebo-controlled study
Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology (2025) · Rct · n=113
Maternal satisfaction with lactation was higher in the SHT group (52.63% vs. 25.00%, p = 0.008).
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.
Based on single RCT (n=113) showing improved maternal satisfaction (52.63% vs 25%). Meta-analysis notes limitations in galactagogue studies including small sample sizes and poor blinding methods.
AI-estimated from published studies. Interpret as directional guidance.
Collagen has a higher evidence score (9/10 vs 7.5/10) and wins in 2 of 3 categories.
No known interactions between Collagen and Shatavari have been documented in our database. However, always consult a healthcare provider before combining supplements.