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Inositol (Myo-Inositol)

A sugar alcohol that's technically a vitamin B-family compound — it's a crucial signaling molecule in your cells and has become especially popular for hormonal and mental health support.

Benefits

  • +Supports insulin sensitivity and blood sugar regulation
  • +Well-studied for PCOS — may restore hormonal balance and ovulation
  • +May help with anxiety and depression (works on serotonin receptors)
  • +Supports healthy mood regulation
  • +Important for cell membrane structure and signaling

Dosage & Cost

Range2–4 g/day (for PCOS, often up to 4 g with 100 mg D-chiro-inositol)
TimingSplit into 2 doses, with meals
Daily cost0.15–0.50

The 40:1 ratio of myo-inositol to D-chiro-inositol is the most studied for PCOS. Can be mixed into water or smoothies. For mood/anxiety, 2–4 g is the common range.

Side Effects

  • !Digestive issues at high doses — gas, bloating, loose stools
  • !May lower blood sugar — monitor if on diabetes medication
  • !Rare: headaches
  • !Start low and build up to your target dose

Food Sources

  • Cantaloupe
  • Citrus fruits (especially oranges)
  • Almonds
  • Beans and legumes
  • Whole grains
  • Supplementation needed for therapeutic doses used in research

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This page is for informational purposes only. The information here has not been evaluated by the Food and Drug Administration (FDA). No supplement discussed on this page is intended to diagnose, treat, cure, or prevent any disease. Please consult your doctor or a qualified healthcare professional before taking any dietary supplement.