Skip to main content
SupplementScience

Types of Myo-Inositol: Forms & Bioavailability

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

Forms Comparison

FormBioavailabilityBest For
Myo-Inositol PowderHighPCOS — most practical form for achieving the 4g daily dose; easily mixed in water; the most commonly studied form
Myo-Inositol + D-Chiro-Inositol (40:1 ratio)HighPCOS with insulin resistance — the 40:1 ratio mimics the physiological plasma ratio; supported by the 2017 international consensus
CapsulesHighConvenience — multiple capsules needed to reach 4g; some products combine myo-inositol with folic acid

Myo-Inositol Powder

Bioavailability: High. Best for: PCOS — most practical form for achieving the 4g daily dose; easily mixed in water; the most commonly studied form.

Myo-Inositol + D-Chiro-Inositol (40:1 ratio)

Bioavailability: High. Best for: PCOS with insulin resistance — the 40:1 ratio mimics the physiological plasma ratio; supported by the 2017 international consensus.

Capsules

Bioavailability: High. Best for: Convenience — multiple capsules needed to reach 4g; some products combine myo-inositol with folic acid.

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.