Treating polycystic ovary syndrome (PCOS) with vitamin-like substances called inositols—a type of sugar—has shown promising results. Inositols have been found to help people with PCOS control blood ...

Inositol may help reduce symptoms of PCOS, including infertility and irregular menstrual periods. Inositol supplements might improve symptoms of type 2 diabetes by lowering fasting blood sugar levels.