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Sulbutiamine Side Effects & Safety

Evidence:Emerging
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • Generally well-tolerated at recommended doses
  • Tolerance can develop with daily use (cycle to prevent)
  • Mild insomnia if taken late in the day
  • Rare: irritability or agitation at higher doses
  • Rare: skin rash or mild allergic reaction
  • Nausea at higher doses

Drug & Supplement Interactions

  • Other dopaminergic compounds — potential additive effects on dopamine system
  • No significant pharmacological interactions reported at standard doses
  • May enhance effects of other nootropics in stacks

Maximum Dose

Do not exceed: 600mg/day (higher doses not well-studied)

Full Sulbutiamine Guide

References

  1. RCTTiev KP, Cabane J, Imbert JC (1999). Treatment of chronic postinfectious fatigue: randomized double-blind study of two doses of sulbutiamine (400-600 mg/day) versus placebo. La Revue de Médecine Interne. DOI PubMed
  2. ReviewStarling-Soares B, Carrera-Bastos P, Bettendorff L (2020). Role of the Synthetic B1 Vitamin Sulbutiamine on Health.. Journal of nutrition and metabolism. DOI PubMed
  3. Micheau J, Durkin TP, Destrade C, et al. (1985). Chronic administration of sulbutiamine improves long term memory formation in mice: possible cholinergic mediation. Pharmacology Biochemistry and Behavior. DOI PubMed