Some herbal practitoners recommend taking Vitex only during the latter half of the
menstrual cycle; however, the studies we cite, regarding use of Vitex to reduce PMS and improve fertility, have all recommended taking Vitex on a continuous basis, throughout the menstrual cycle. You can start taking FertilityBlend any time during your cycle. It usually takes 2-3 months to show significant changes in hormone balance, but keep taking for up to a year, or until pregnancy is confirmed.