Inositol is a type of sugar that influences both the body's insulin response and several hormones associated with mood and cognition. It's often referred to as vitamin B8, has antioxidant function that fight the damaging effects of free radicals in the brain, circulatory system, and other body tissues.

Inositol is found naturally in cantaloupe, citrus fruit, and many fiber-rich foods (such as beans, brown rice, corn, sesame seeds, and wheat bran).