Levonorgestrel (LNG) is a synthetic progestogen similar to [Progesterone] used in contraception and hormone therapy.[A181988,T659] Also known as Plan B, it is used as a single agent in emergency contraception, and as a hormonal contraceptive released from an intrauterine device, commonly referred to as an IUD. Some of these devices are known as Jaydess, Kyleena, and Mirena. A subdermal implant of levonorgestrel that slowly releases the hormone over a long-term period is also available.[L7823] In addition to the above uses, levonorgestrel is used as a component of long-term combination contraceptives.[A181991,L7760,L7778] Globally, levonorgestrel is the most commonly used emergency contraceptive. It was initially granted FDA approval in 1982 and was the first emergency contraceptive containing only progesterone, showing high levels of efficacy and a lack of estrogenic adverse effects when compared to older emergency contraceptive regimens.[A181976,A181994,L7760]
Levonorgestrel and Ethinyl Estradiol and Ethinyl Estradiol
Levora
Plan B
Falessa
Alysena 28
EContra One-Step
Triquilar 21
Kurvelo
Daysee
Ovima 28
Tyblume
Vienva
Triphasil 21
Delyla
Aftera
Emergency Contraceptive
Seasonale
Alysena 21
Levonorgestrel and Ethinyl Estradoil
Climara Pro
Backup Plan Onestep
Ovima 21
Lybrel
Min-ovral 28 Tab
LoSeasonique
Min-ovral 28
Jolessa
Mirena
Amazon Basic Care Levonorgestrel
Audrina 28
Amethyst
Aviane 28 Day
Falmina
Rivelsa
Stix Restart
Introvale
Option 2
Fallback Solo
Amethia
Jaydess
Opcicon One-Step
Quaterna
Orsythia
camrese Lo
Vienva TM
Fem Choice morning after
BionaFem
Levonorgestrel Tablet, 1.5 mg
Julie
SheWise
Lessina
Morning After Pill
LEADER Emergency Contraceptive Levonorgestrel
Triphasil 28 Tab
Myzilra
Enpresse
Levonorgestrel and Ethinyl Estradiol
Sronyx
EContra EZ
Setlakin
Esme 28
Triphasil-21
Backup Plan
Chateal
Larissia
Preven Emergency Contraceptive
Next Choice One Dose
Take Action
Minivlar 30
Iclevia
Quasense
Next Choice
Jaimiess
Lillow
Triphasil 21 Tab
Morning After
Plan B One-Step
Minzoya
Levlite
Twirla
Levonorgetsrel and Ethinyl Estradiol
Basic Care Levonorgestrel
Min-ovral 21 Tab
My Way
Lo Simpesse
Levonorgestrel Tablets, 0.75mg
Chateal EQ
Triquilar 28
Portia 28
Dolishale
Afirmelle
Seasonique
Contingency
Nordette
Lutera
Portia
Ashlyna
Laylaa 28
Her Style
Ayuna
Fayosim
Aubra
Trivora
LoJaimiess
Alesse 28
Esme 21
Quartette
After Banger
Portia 21
AfterPlan
Aviane 21
Indayo
Indication
**Emergency contraception** Levonorgestrel, in the single-agent emergency contraceptive form, is indicated for the prevention of pregnancy after the confirmed or suspected failure of contraception methods or following unprotected intercourse. It is distributed by prescription for patients under 17, and over the counter for those above this age.[L7760] This levonorgestrel-only form of contraception is not indicated for regular contraception and must be taken as soon as possible within 72 hours after intercourse.[A181976,L7760] It has shown a lower efficacy when it is used off label within 96 hours.[T659] **Long-term contraception or nonemergency contraception** In addition to the above indication in emergency contraception, levonorgestrel is combined with other contraceptives in contraceptive formulations designed for regular use, for example with ethinyl estradiol.[L7766] It is used in various hormone-releasing intrauterine devices for long-term contraception ranging for a duration of 3-5 years.[L7778,L7781,L7787] Product labeling for Mirena specifically mentions that it is recommended in women who have had at least 1 child and can be indicated for the prevention of pregnancy for up to 8 years.[L7778,L42950] A subdermal implant is also available for the prevention of pregnancy for up to 5 years.[L7823] **Hormone therapy and off-label uses** Levonorgestrel is prescribed in combination with estradiol as hormone therapy during menopause to manage vasomotor symptoms and to prevent osteoporosis.[L7805]Off-label, levonorgestrel may be used to treat menorrhagia, endometrial hyperplasia, and endometriosis.[T659]
Categories
Adrenal Cortex Hormones
Combination Contraceptives (with Estrogen and derivatives)
Contraceptive Agents, Female
Contraceptive Agents, Hormonal
Contraceptives, Oral
Contraceptives, Oral, Synthetic
Contraceptives, Postcoital
Cytochrome P-450 CYP3A Substrates
Cytochrome P-450 CYP3A4 Substrates
Cytochrome P-450 CYP3A5 Substrates
Cytochrome P-450 Substrates
Fused-Ring Compounds
Genito Urinary System and Sex Hormones
Hormonal Contraceptives for Systemic Use
Hyperglycemia-Associated Agents
Inhibit Ovum Fertilization
Norpregnanes
Norpregnenes
Norsteroids
Progestin Contraceptives
Progestin-containing Intrauterine Device
Progestins
Progestogens and Estrogens, Sequential Preparations
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison
T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS.
Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682