What is inositol? Inositol is a natural sugar found in small amounts in some foods, mainly fruit like oranges and melons. It’s also sometimes called vitamin B8 because of its vitamin-like properties. With 750mg inositol in each of these capsules, it’s easier than ever to supplement your daily inositol intake. What works well with inositol? As well as taking inositol, you can also support your wellbeing with our Stimulate capsules for men and women.