DHEA supplementation can improve ovarian reserve and fertility outcomes in women with diminished ovarian reserve. It acts early in follicle development to stimulate growth and maturation. Studies show DHEA increases levels of AMH, the number of eggs and embryos retrieved in IVF, and pregnancy rates while decreasing cancellation rates. The optimal dosage is 25mg three times daily until pregnancy is achieved. DHEA is not recommended for PCOS patients unless they have low testosterone levels and are poor responders.