Inositol Supplements: Benefits, Dosage and Safety
Inositol supplements, mainly myo-inositol, are widely used for polycystic ovary syndrome. Some trials show improvements in insulin resistance and ovulation, but a review for the 2023 international PCOS guideline judged the evidence limited. Inositol is generally well tolerated.
Evidence at a glance
| Use | Grade | What the research shows |
|---|---|---|
| PCOS metabolic and ovulation measures | C | Some benefits; evidence judged limited in the 2023 guideline review. |
A: strong, consistent human evidence · B: moderate · C: limited or mixed · D: good evidence of no benefit.
Inositol is involved in insulin signaling and is found in fruits, beans and grains.
How to take it
Studies commonly used 2–4 g of myo-inositol daily. See PCOS supplements.
Safety and interactions
High doses can cause nausea or gas. Discuss with your clinician if trying to conceive.
Always tell your doctor and pharmacist about the supplements you take. Check combinations with our interaction checker.
Sources
This page is for education and is not a substitute for advice from your doctor. Read our medical disclaimer.