Head-to-head evidence comparison — which supplement is right for you?
Omega-3 wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
2-3g combined EPA+DHA daily
With meals containing fat
Triglyceride form fish oil
400-1600mg for mood; 600-1200mg for joints
On empty stomach, Morning and/or midday
Enteric-coated tablets (SAMe tosylate or butanedisulfonate)
4-8 weeks
2-4 weeks
Immediate
4-12 weeks
2-6 weeks
4-8 weeks
4-8 weeks
Vitamin D supplementation vs. placebo and incident type 2 diabetes in an ancillary study of the randomized Vitamin D and Omega-3 Trial
Nature communications (2025) · Meta analysis · n=5205
Mean body mass index (BMI) was 27.5 kg/m2 (SD = 5.3), with 51% female and 17% Black race/ethnicity.
Omega-3 fatty acids for intermittent claudication
The Cochrane database of systematic reviews (2024) · Meta analysis · n=1830
Omega-3 compared with a control may have little to no effect on ankle-brachial index (MD -0.02, 95% CI -0.08 to 0.04; 3 studies, 168 participants; very low-certainty evidence).
A systematic review and meta-analysis of the omega-3 fatty acids effects on brain-derived neurotrophic factor (BDNF)
Nutritional neuroscience (2024) · Meta analysis · n=587
The present systematic review and meta-analysis indicate the efficacy of omega-3 FAs in increasing the serum concentration of BDNF.
Comparison of concurrent, resistance, or aerobic training on body fat loss: a systematic review and meta-analysis
Journal of the International Society of Sports Nutrition (2025) · Meta analysis · n=1564
CT reduced significantly more fat mass compared to RT (MD: -1.09 kg [95% CI = -0.27 to -1.91]; p = 0.009).
Optimal duration of antibiotic treatment for community-acquired pneumonia in adults: a systematic review and duration-effect meta-analysis
BMJ open (2023) · Meta analysis · n=2399
We included nine trials (2399 patients with a mean (SD) age of 61.2 (22.1); 39% women).
Needling Point Location Used in Sham Acupuncture for Chronic Nonspecific Low Back Pain: A Systematic Review and Network Meta-Analysis
JAMA network open (2023) · Meta analysis · n=4379
In comparison with SATS, acupuncture was significantly associated with improvements in both pain (SMD, -0.33; 95% CI, -0.52 to -0.15) and function outcomes (SMD, -0.13; 95% CI, -0.25 to -0.02); however, there were no differences between acupuncture and SATV.
Omega-3 has a higher evidence score (9/10 vs 9/10) and wins in 1 of 3 categories.
For support mood, SAMe has a higher relevance score (90 vs 88).
No known interactions between Omega-3 and SAMe have been documented in our database. However, always consult a healthcare provider before combining supplements.