S-Adenosyl-L-Methionine
Drives 100+ methylation reactions including neurotransmitter synthesis — clinically validated for depression, osteoarthritis, and liver health.
SAMe is a molecule naturally produced in the body that's involved in over 100 biochemical reactions including neurotransmitter synthesis, joint cartilage maintenance, and liver detoxification. Clinical evidence supports its use for depression (comparable to some antidepressants), osteoarthritis, and liver conditions. One of the most clinically validated supplements.
Provides methyl groups for critical reactions
Supports synthesis of mood-regulating neurotransmitters
Supports joint cartilage maintenance
How SAMe 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.
400-1600mg for mood; 600-1200mg for joints
Loading: Start at 200-400mg and gradually increase to minimize GI effects
Can be taken without food
| Form | Type |
|---|---|
| 💊Enteric-coated tablets (SAMe tosylate or butanedisulfonate) | Recommended |
| 💊SAMe disulfate | Alternative |
SAMe is unstable — buy enteric-coated from reputable brands. Keep refrigerated. Check expiration dates.
Minimum: 4 weeks
Optimal: 12 weeks
Cycling: Not required
Note: Best absorbed on empty stomach. Avoid evening dosing as it may be energizing. Can take with B12 and folate to support methylation.
Significant antidepressant effects
Reduced osteoarthritis symptoms
Improved liver function in liver disease
Insufficient data; avoid
Avoid — may trigger manic episodes
Risk of serotonin syndrome — use only under medical supervision
May reduce effectiveness
Increased serotonin syndrome risk
Serotonin syndrome risk
Hypertensive crisis, serotonin syndrome
Tip: Start low, use enteric-coated, take with small snack if needed
Tip: Reduce dose
Tip: Take earlier in day
Tip: Contraindicated in bipolar disorder
Top studies from 40+ peer-reviewed papers
Lafontant K et al. • Journal of the International Society of Sports Nutrition (2025)
“While there are no differences in percent body fat loss between exercise modes, AT and CT are more effective than RT alone in reducing absolute fat mass; however, RT neither improved nor impeded fat mass loss when incorporated into CT.”
Furukawa Y et al. • BMJ open (2023)
“Shorter treatment duration (3-5 days) probably offers the optimal balance between efficacy and treatment burden for treating CAP in adults if they achieved clinical stability.”
Lee B et al. • JAMA network open (2023)
“In this NMA, sham acupuncture needling at the same points as those in acupuncture was not a true placebo control for assessing the efficacy of acupuncture for CLBP and might underestimate the outcome of acupuncture in clinical settings.”
Walker KF et al. • The Cochrane database of systematic reviews (2020)
“When compared with placebo, UDCA administered to women with ICP probably shows a reduction in pruritus.”
Rutjes AW et al. • The Cochrane database of systematic reviews (2009)
“The current systematic review is inconclusive, hampered by the inclusion of mainly small trials of questionable quality.”
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