D-chiro-inositol

An inositol isomer taken for insulin resistance in PCOS, usually with myo-inositol in a 40:1 ratio.

Type
Supplement (inositol isomer)

Why it is flagged

No hormonal harm identified at supplement doses. Taken on its own at high doses, one small IVF study linked it to poorer egg quality, which is why combinations keep it low.

Sources

Also listed as

dci, chiro-inositol, chiroinositol, d-chiro inositol