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Head-to-head evidence comparison — which supplement is right for you?
SAMe vs Trazodone: SAMe has the stronger overall evidence (7 vs 3.8/10); take care combining them — there's a flagged interaction. Take the 60-second quiz for a pick tailored to your goals.
SAMe wins 3 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mixed evidence
1 of 3 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
Shared outcomes (1)
Outcomes where both SAMe and Trazodone have evidence — compare verdict strength side-by-side.
400-1600mg for mood; 600-1200mg for joints
On empty stomach, Morning and/or midday
Enteric-coated tablets (SAMe tosylate or butanedisulfonate)
Prescription only — a clinician sets the dose. The doses studied for sleep are low: the placebo-controlled trials that show anything used 50 mg at bedtime (30 min before bed in the primary-insomnia study; 10 PM in the Alzheimer's study), and the systematic-review literature treats <100 mg/day as the 'low-dose' insomnia range versus ≥100 mg/day as the antidepressant range. This is entirely OFF-LABEL. The approved indication is major depressive disorder, where outpatient dosing goes up to 400 mg/day in divided doses (up to 600 mg/day in monitored inpatients).
before-bed
Immediate-release oral tablet, prescribed and dose-titrated by a clinician
Risk of serotonin syndrome.
Do not combine without prescriber supervision.
2-6 weeks
4-8 weeks
4-8 weeks
1-7 nights
Days to weeks
2 weeks
Morning after the first dose
S-Adenosylmethionine for osteoarthritis of the knee or hip
The Cochrane database of systematic reviews (2009) · Meta analysis · n=656
For pain, the analysis indicated a small SMD of -0.17 (95% CI -0.34 to 0.01), corresponding to a difference in pain scores between SAMe and placebo of 0.4 cm on a 10 cm VAS, with no between trial heterogeneity (I(2) = 0).
Efficacy of Pharmacological Interventions in Milder Depression: A Systematic Review and Meta-Analysis
Neuropsychopharmacology reports (2025) · Meta analysis · n=1049
A meta-analysis found no significant difference in response rates between the two treatments (risk ratio [RR] = 0.96, 95% CI: 0.78-1.18) or dropout rates (RR = 1.08, 95% CI: 0.62-1.88).
S-Adenosylmethionine (SAMe) for Liver Health: A Systematic Review
Nutrients (2024) · Systematic review · n=15
The most common doses were SAMe 1000 mg or 1200 mg per day with or without another treatment or natural supplement.
Clinical Practice Guideline for the Pharmacologic Treatment of Chronic Insomnia in Adults: An American Academy of Sleep Medicine Clinical Practice Guideline.
Journal of Clinical Sleep Medicine (2017) · Systematic review
The AASM commissioned a task force of four sleep-medicine experts, ran a systematic review of randomised controlled trials, and graded the evidence with GRADE
Trazodone for the treatment of insomnia: a meta-analysis of randomized placebo-controlled trials.
Sleep Medicine (2018) · Meta analysis
Seven randomised placebo-controlled trials involving only 429 patients in total — the entire dedicated meta-analytic base for trazodone in insomnia
Comparative effects of pharmacological interventions for the acute and long-term management of insomnia disorder in adults: a systematic review and network meta-analysis.
The Lancet (2022) · Meta analysis
170 trials (36 interventions, 47,950 participants) in the systematic review; 154 double-blind RCTs (30 interventions, 44,089 participants) in the network meta-analysis
Meta-analysis of 656 patients showed small effect size (SMD -0.17) corresponding to only 0.4cm improvement on 10cm pain scale. Effect is modest and barely reaches statistical significance threshold.
AI-estimated from published studies. Interpret as directional guidance.
SAMe has a higher evidence score (7/10 vs 3.8/10) and wins in 3 of 3 categories.
Caution: Risk of serotonin syndrome. Do not combine without prescriber supervision. Always consult a healthcare provider before combining these supplements.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.