Estradiol (medication)
Estradiol is available in a variety of different formulations, including oral, intranasal, transdermal/topical, vaginal, injectable, and implantable preparations. An ester may be attached to one or both of the hydroxyl groups of estradiol to improve its oral bioavailability and/or duration of action with injection. Such modifications give rise to forms such as estradiol acetate (oral and vaginal), estradiol valerate (oral and injectable), estradiol cypionate (injectable), estradiol benzoate (injectable), estradiol undecylate (injectable), and polyestradiol phosphate (injectable; a polymerized ester of estradiol), which are all prodrugs of estradiol.
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.