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Head-to-head evidence comparison — which supplement is right for you?
MSM wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
1 of 1 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
1 of 2 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Astaxanthin and MSM have evidence — compare verdict strength side-by-side.
4-12mg
With a meal containing fat
Softgels from Haematococcus pluvialis algae
2-3g
With meals, Split into 2-3 doses
Powder or capsules
6-12 weeks
4 weeks
2-4 weeks
4-12 weeks
2-4 weeks
8-12 weeks
Systematic Review and Meta-Analysis on the Effects of Astaxanthin on Human Skin Ageing
Nutrients (2021) · Meta analysis
Ingestion and/or topical usages of ASX may be effective in reducing skin ageing and have promising cosmetical potential, as it improves moisture content and elasticity and reduces wrinkles.
Effect of astaxanthin supplementation on female fertility and reproductive outcomes: a systematic review and meta-analysis of clinical and animal studies
Journal of ovarian research (2024) · Meta analysis
This systematic review shows that AST supplementation may improve assisted reproductive technology outcomes by enhancing oocyte quality and reducing OS in the reproductive organs.
Astaxanthin supplementation mildly reduced oxidative stress and inflammation biomarkers: a systematic review and meta-analysis of randomized controlled trials
Nutrition research (New York, N.Y.) (2022) · Meta analysis · n=380
Compared with placebo, astaxanthin significantly reduced blood malondialdehyde concentration (standardized mean difference [SMD]: -0.95; 95% CI, -1.67 to -0.23; P = .01).
Effects of dietary supplements on patients with osteoarthritis: A systematic review and network meta-analysis
Journal of integrative medicine (2025) · Meta analysis · n=2455
In the WOMAC pain score, the SUCRA of passion fruit peel extract was 91% (mean difference [MD]: -9.2; 95% confidence interval [CI]: [-16.0, -2.3]), followed by methylsulfonylmethane (89%), undenatured type II collagen (87%), collagen (84%), and Lanconone (82%).
Methylsulfonylmethane Improves Knee Quality of Life in Participants with Mild Knee Pain: A Randomized, Double-Blind, Placebo-Controlled Trial
Nutrients (2023) · Rct · n=88
The total scores at 12 weeks in the MSM and placebo groups as the primary outcome were significantly different (p = 0.046).
The Effect of Daily Methylsulfonylmethane (MSM) Consumption on High-Density Lipoprotein Cholesterol in Healthy Overweight and Obese Adults: A Randomized Controlled Trial
Nutrients (2021) · Rct · n=22
The primary finding of this work shows that high-density lipoprotein cholesterol was elevated at 8 and 16 weeks of daily MSM consumption compared to baseline, (p = 0.008, p = 0.013).
Based on limited meta-analysis data showing cosmetic benefits. Conservative effectiveness estimate due to cosmetic nature of outcomes and limited study population. Higher doses may cause orange skin tint.
Based on limited RCT evidence. One 12-week study (n=88) showed significant improvement in knee pain scores. Conservative effectiveness estimate given small study size and limited replication.
AI-estimated from published studies. Interpret as directional guidance.
MSM has a higher evidence score (8.5/10 vs 7.5/10) and wins in 1 of 3 categories.
For reduce inflammation, MSM has a higher relevance score (80 vs 60).
No known interactions between Astaxanthin and MSM have been documented in our database. However, always consult a healthcare provider before combining supplements.