Estradiol sulfate
As the sodium salt, sodium estradiol sulfate, E2S is present as a minor constituent (0.9%) of conjugated equine estrogens (CEEs), or Premarin. It effectively functions as a prodrug to estradiol in this preparation, similarly to E1S. E2S is also formed as a metabolite of estradiol, as well as of estrone and E1S. Aside from its presence in CEEs, E2S is not available as a commercial pharmaceutical drug.
Levonorgestrel
Levonorgestrel is marketed alone or in combination with an estrogen (specifically ethinylestradiol, estradiol, or estradiol valerate) under a multitude of brand names throughout the world, including "Alesse", Altavera, Alysena, Amethia, Amethyst, Ashlyna, Aviane, Camrese, Chateal, "Climara Pro", Daysee, Emerres, Enpresse, Erlibelle, "Escapelle", Falmina, Introvale, Isteranda, "Jadelle", "Jaydess", Jolessa, "Klimonorm", Kurvelo, Kyleena, Lessina, "Levlen", Levodonna, "Levonelle", Levonest, Levosert, Levora, Liletta, "Loette", "Logynon", "LoSeasonique", Lutera, Lybrel, Marlissa, "Microgynon", "Microlut", Min-Ovral, "Miranova", "Mirena", My Way, Myzilra, Next Choice, "Nordette", Norgeston, NorLevo, "Norplant", Option 2, Orsythia, Ovima, Ovranette, "Plan B", "Plan B One-Step", Portia, "Postinor", "Postinor-2", Preventeza, Ramonna, "Rigevidon", Quartette, Quasense, "Seasonale", "Seasonique", "Skyla", Sronyx, Tri-Levlen, "Trinordiol", Triphasil, "Triquilar", "Tri-Regol", Trivora, and Upostelle, among many others. These formulations are used as emergency contraceptives, normal contraceptives, or in menopausal hormone therapy for the treatment of menopausal symptoms.