Inositol tablets are effective in the treatment of polycystic ovary syndrome or ovarian sluggishness. Inositol relieves complications associated with PCOS, including irregular periods and hair growth. What's more, by reducing blood triglycerides, lowering blood pressure and improving blood sugar control, they can promote ovulation and fertility. Inositol, or vitamin B-8, is a type of natural sugar found in the body and in a variety of foods.