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Myo-Inositol Side Effects & Safety

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • Mild GI symptoms — nausea, gas, bloating, or loose stools at higher doses (most common, usually transient)
  • Headache (uncommon)
  • Dizziness (rare)
  • Very well-tolerated overall — side effect profile is significantly milder than metformin

Drug & Supplement Interactions

  • Metformin — additive insulin-sensitizing effects; combination may be used under medical supervision but monitor for hypoglycemia
  • Insulin and oral diabetic medications — potential additive hypoglycemic effects; adjust doses as needed with physician
  • Lithium — inositol depletion is part of lithium's mechanism; high-dose inositol may theoretically interfere; consult psychiatrist

Maximum Dose

Do not exceed: 4g daily is the standard therapeutic dose; doses up to 12g have been studied for other conditions (OCD, panic disorder) but are not standard for PCOS

Full Myo-Inositol Guide

References

  1. (). Effects of myo-inositol in women with PCOS: a systematic review of randomized controlled trials. Gynecological Endocrinology. DOI
  2. (). Results from the International Consensus Conference on Myo-inositol and D-chiro-inositol in Obstetrics and Gynecology. Gynecological Endocrinology. DOI
  3. (). Randomized, double blind placebo-controlled trial: effects of myo-inositol on ovarian function and metabolic factors in women with PCOS. European Review for Medical and Pharmacological Sciences.