BestVitamin Best Menstrual Cycle Support provides a synergistic blend of chasteberry, Ginkgo biloba, and vitamin B6, used to help regulate menstrual-cycle concerns. This formulation assists in relieving negative symptoms associated with the menstrual cycle such as irregular menstruation, mood imbalances, breast tenderness, irritability, and menstrual cramping. Symptoms such as hot flashes, memory changes, and insomnia associated with perimenopause and menopause.