Estrogens, Progestogens, and Androgens

  • Estrogens

    • produced by developing follicle

    • under the influence of LH and FSH

    • increase in estrogens

      • causes surge in LH

      • LH triggers ovulation and maturation

    • kinetics

      • naturally occurring

        • variable availability

      • synthetics

        • prolonged action and higher potency risks