Chemistry:Norelgestromin
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| Trade names | Evra, Ortho Evra, Xulane, others |
| Other names | Norelgestromine; NGMN; RWJ-10553; Levonorgestrel 3-oxime; 17β-Deacetylnorgestimate; 17α-Ethynyl-18-methyl-19-nortestosterone 3-oxime; 17α-Ethynyl-18-methylestr-4-en-17β-ol-3-one 3-oxime |
| AHFS/Drugs.com | International Drug Names |
| MedlinePlus | a602006 |
| License data | |
| Routes of administration | Transdermal patch |
| Drug class | Progestogen; Progestin |
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| Pharmacokinetic data | |
| Protein binding | 99% (to albumin but not to SHBG)[1][2][3] |
| Metabolism | Liver (oxime to ketone reaction, hydroxylation, conjugation)[4] |
| Metabolites | • Levonorgestrel[4] |
| Elimination half-life | 17–37 hours[1][3] |
| Excretion | Urine and feces[4] |
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| Chemical and physical data | |
| Formula | C21H29NO2 |
| Molar mass | 327.468 g·mol−1 |
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Norelgestromin, or norelgestromine, sold under the brand names Evra and Ortho Evra among others, is a progestin medication which is used as a method of birth control for women.[5][6][7] The medication is available in combination with an estrogen and is not available alone.[5] It is used as a patch that is applied to the skin.[6][7]
Side effects of the combination of an estrogen and norelgestromin include menstrual irregularities, headaches, nausea, abdominal pain, breast tenderness, mood changes, and others.[4] Norelgestromin is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like progesterone.[8][9] It has very weak androgenic activity and no other important hormonal activity.[8][9]
Norelgestromin was introduced for medical use in 2002.[10] It is sometimes referred to as a "third-generation" progestin.[11][12] Norelgestromin is marketed widely throughout the world.[5] It is available as a generic medication.[13]
Medical uses
Norelgestromin is used in combination with ethinyl estradiol in contraceptive patches.[6][4][7] These patches mediate their contraceptive effects by suppressing gonadotropin levels as well as by causing changes in the cervical mucus and endometrium that diminish the likelihood of pregnancy.[4]
Available forms
Norelgestromin is available only as a transdermal contraceptive patch in combination with ethinyl estradiol.[6] The Ortho Evra patch is a 20 cm2, once-weekly adhesive that contains 6.0 mg norelgestromin and 0.6 mg ethinyl estradiol and delivers 200 µg/day norelgestromin and 35 µg/day ethinyl estradiol.[4][14]
Contraindications
Side effects
Norelgestromin has mostly been studied in combination with an estrogen, so the side effects of norelgestromin specifically or on its own have not been well-defined.[4] Side effects associated with the combination of ethinylestradiol and norelgestromin as a transdermal patch in premenopausal women, with greater than or equal to 2.5% incidence over 6 to 13 menstrual cycles, include breast symptoms (including discomfort, engorgement, and/or pain; 22.4%), headaches (21.0%), application site reactions (17.1%), nausea (16.6%), abdominal pain (8.1%), dysmenorrhea (7.8%), vaginal bleeding and menstrual disorders (6.4%), mood, affect, and anxiety disorders (6.3%), vomiting (5.1%), diarrhea (4.2%), vaginal yeast infections (3.9%), dizziness (3.3%), acne (2.9%), migraine (2.7%), weight gain (2.7%), fatigue (2.6%), and pruritus (2.5%).[4]
Overdose
Interactions
Pharmacology
Pharmacodynamics
Norelgestromin is a progestogen.[3][4] It is one of the active metabolites of norgestimate.[8][9] Unlike many related progestins, norelgestromin reportedly has negligible androgenic activity.[9] However, it produces levonorgestrel as an active metabolite to some extent, which does have some androgenic activity.[4][3] Nonetheless, transdermally-administered norelgestromin does not counteract the increase in sex hormone-binding globulin levels produced by ethinyl estradiol.[4]
| Compound | PR | AR | ER | GR | MR | SHBG | CBG |
|---|---|---|---|---|---|---|---|
| Norelgestromin | 10 | 0 | ? | ? | ? | 0 | ? |
| Levonorgestrel (3-keto-NGMN) | 150–162 | 45 | 0 | 1–8 | 17–75 | 50 | 0 |
Pharmacokinetics
Upon application of a transdermal patch containing norelgestromin and ethinyl estradiol, plateau levels of both are reached by approximately 48 hours, and steady-state levels are reached within 2 weeks of application.[4] Absorption following application to the buttock, upper outer arm, abdomen, and upper torso was assessed and, while absorption from the abdomen was slightly lower, it was considered to be therapeutically equivalent for the various areas.[4] Mean levels of norelgestromin at steady-state ranged from 0.305 ng/mL to 1.53 ng/mL, with an average of about 0.725 ng/mL.[4] The plasma protein binding of norelgestromin is 99%, and it is bound to albumin but not to sex hormone-binding globulin.[1][2][3]
The metabolism of norelgestromin takes place in the liver and is via transformation into levonorgestrel (conversion of the C3 oxime into a ketone) as well as hydroxylation and conjugation.[4] However, because norelgestromin is used parenterally, first-pass metabolism in the liver and gastrointestinal tract that normally occurs with oral administration are avoided.[4] The biological half-life of norelgestromin is 17 to 37 hours.[1][3] The metabolites of norelgestromin, along with those of ethinyl estradiol, are eliminated in the urine and feces.[4]
Chemistry
Norelgestromin, also known as 17α-ethynyl-18-methyl-19-nortestosterone 3-oxime or as 17α-ethynyl-18-methylestr-4-en-17β-ol-3-one 3-oxime, is a synthetic estrane steroid and a derivative of testosterone.[5] It is a racemic mixture of E and Z isomers, which have approximately the same activity.[15] Norelgestromin is more specifically a derivative of norethisterone (17α-ethynyl-19-nortestosterone) and is a member of the gonane (18-methylestrane) subgroup of the 19-nortestosterone family of progestins.[16][17] It is the C3 oxime derivative of levonorgestrel and the C17β deacetyl derivative of norgestimate and is also known as levonorgestrel 3-oxime and as 17β-deacetylnorgestimate.[18] A related progestin is norethisterone acetate oxime (17α-ethynyl-19-nortestosterone 3-oxime 17β-acetate).[19]
History
Norelgestromin was introduced for medical use in 2002.[10]
Society and culture
Generic names
Norelgestromin is the generic name of the drug and its INN, USAN, and BAN.[5] The combined ethinyl estradiol and norelgestromin contraceptive patch is also known by its developmental code name RWJ-10553.[20]
Brand names
Norelgestromin is marketed under the brand names Evra, Ortho Evra, Xulane, and others, all in combination with ethinylestradiol.[5][13]
Availability
Norelgestromin is marketed widely throughout the world, including in the United States , Canada , the United Kingdom , Ireland, elsewhere throughout Europe, South Africa , Latin America, Asia, and elsewhere in the world.[5] It is not listed as being marketed in Australia , New Zealand, Japan , South Korea , China , India , or certain other countries.[5]
Research
A transdermal gel formulation of norgelstromin and ethinyl estradiol was under development by Antares Pharma for use as a method of birth control with the code name AP-1081 but development was discontinued.[21]
See also
- Ethinylestradiol/norelgestromin
References
- ↑ 1.0 1.1 1.2 1.3 "PREFEST (estradiol/norgestimate) tablets". Teva Pharmaceuticals. U.S. Food and Drug Administration. November 2017. https://www.accessdata.fda.gov/drugsatfda_docs/label/2017/021040s013lbl.pdf.
- ↑ 2.0 2.1 "ORTHO-CYCLEN and ORTHO TRI-CYCLEN (norgestimate/ethinyl estradiol) tablets, for oral use". Janssen Pharmaceuticals, Inc.. U.S. Food and Drug Administration. August 2017. https://www.accessdata.fda.gov/drugsatfda_docs/label/2017/019653s058,019697s054lbl.pdf.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "Pharmacology of estrogens and progestogens: influence of different routes of administration". Climacteric 8 (Suppl 1): 3–63. August 2005. doi:10.1080/13697130500148875. PMID 16112947.
- ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 "ORTHO EVRA (norelgestromin / ethinyl estradiol TRANSDERMAL SYSTEM)". Janssen Pharmaceuticals, Inc.. U.S. Food and Drug Administration. August 2012. https://www.accessdata.fda.gov/drugsatfda_docs/label/2012/021180s043lbl.pdf.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 "Norelgestromin - brand name list from". Drugs.com. https://www.drugs.com/international/norelgestromin.html.
- ↑ 6.0 6.1 6.2 6.3 "Norelgestromin/Ethinyl Estradiol Patch". Drugs.com. https://www.drugs.com/cdi/norelgestromin-ethinyl-estradiol-patch.html.
- ↑ 7.0 7.1 7.2 "Satisfaction and compliance in hormonal contraception: the result of a multicentre clinical study on women's experience with the ethinylestradiol/norelgestromin contraceptive patch in Italy". BMC Women's Health 9 (1): 18. June 2009. doi:10.1186/1472-6874-9-18. PMID 19566925.
- ↑ 8.0 8.1 8.2 Annual Reports in Medicinal Chemistry. Academic Press. 2003. pp. 362–. ISBN 978-0-12-040538-1. https://books.google.com/books?id=ECfQ6D5JLusC&pg=PA362.
- ↑ 9.0 9.1 9.2 9.3 Encyclopedia of Molecular Pharmacology. Springer Science & Business Media. 14 August 2008. pp. 391–. ISBN 978-3-540-38916-3. https://books.google.com/books?id=iwwo5gx8aX8C&pg=PA391.
- ↑ 10.0 10.1 Annual Reports in Medicinal Chemistry. Academic Press. 2012. pp. 620–. ISBN 978-0-12-396492-2. https://books.google.com/books?id=xpe9Mk50BGsC&pg=PA620.
- ↑ Women's Health Across the Lifespan: A Pharmacotherapeutic Approach. ASHP. 2010. pp. 294–. ISBN 978-1-58528-194-7. https://books.google.com/books?id=riP3pxq2jWAC&pg=PA294.
- ↑ Exercise and Human Reproduction: Induced Fertility Disorders and Possible Therapies. Springer. 7 March 2016. pp. 288–. ISBN 978-1-4939-3402-7. https://books.google.com/books?id=d86zCwAAQBAJ&pg=PA288.
- ↑ 13.0 13.1 "First Generic Ortho Evra Patch Launched". Medical Professionals Reference (MPR). Haymarket Media, Inc.. 17 April 2014. https://www.empr.com/generics-news/first-generic-ortho-evra-patch-launched/article/343041/.
- ↑ "Transdermal delivery of combined hormonal contraception: a review of the current literature". International Journal of Women's Health 9: 315–321. 2017. doi:10.2147/IJWH.S102306. PMID 28553144.
- ↑ Tombari DG, Vecchioli A, "Process for obtaining norelgestromin in different relations of isomers E and Z", US patent 7345183, issued 18 March 2008, assigned to Gador SA.
- ↑ Pharmacology for Women's Health. Jones & Bartlett Publishers. 8 September 2015. pp. 368–. ISBN 978-1-284-05748-5. https://books.google.com/books?id=AniUCgAAQBAJ&pg=PA368.
- ↑ The Handbook of Contraception: A Guide for Practical Management. Springer Science & Business Media. 7 November 2007. pp. 16–. ISBN 978-1-59745-150-5. https://books.google.com/books?id=sczb0Tk_2IwC&pg=PA16.
- ↑ IARC Working Group on the Evaluation of Carcinogenic Risks to Humans; World Health Organization; International Agency for Research on Cancer (2007). Combined Estrogen-progestogen Contraceptives and Combined Estrogen-progestogen Menopausal Therapy. World Health Organization. pp. 150–151. ISBN 978-92-832-1291-1. https://books.google.com/books?id=aGDU5xibtNgC&pg=PA150.
- ↑ The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. 14 November 2014. pp. 886–. ISBN 978-1-4757-2085-3. https://books.google.com/books?id=0vXTBwAAQBAJ&pg=PA886.
- ↑ "Ethinylestradiol/Norelgestromin transdermal - Johnson & Johnson". AdisInsight. Springer Nature Switzerland AG. http://adisinsight.springer.com/drugs/800013168.
- ↑ "Ethinylestradiol/Norelgestromin". AdisInsight. Springer Nature Switzerland AG. http://adisinsight.springer.com/drugs/800022316.
Further reading
- "Transdermal contraception". Seminars in Reproductive Medicine 19 (4): 373–380. December 2001. doi:10.1055/s-2001-18645. PMID 11727179.
- "The transdermal contraceptive patch: a new approach to hormonal contraception". International Journal of Fertility and Women's Medicine 47 (2): 69–76. 2002. PMID 11991433.
- "Transdermal delivery of sex steroids for hormone replacement therapy and contraception. A review of principles and practice". The Journal of Reproductive Medicine 48 (7): 525–540. July 2003. PMID 12953327.
- "Transdermal ethinylestradiol/norelgestromin: a review of its use in hormonal contraception". Treatments in Endocrinology 2 (3): 191–206. 2003. doi:10.2165/00024677-200302030-00005. PMID 15966567.
- "[Transdermal contraception--a new beginning]" (in bg). Akusherstvo I Ginekologiia 43 (Suppl 1): 19–27. 2004. PMID 15323313.
- "Norelgestromin/ethinyl estradiol transdermal system". Journal of the Medical Association of Thailand = Chotmaihet Thangphaet 88 (Suppl 2): S82–S84. October 2005. PMID 17722322.
- "The vaginal ring and transdermal patch: new methods of contraception". Sexual Health 3 (3): 135–142. September 2006. doi:10.1071/sh05060. PMID 17044218.
- "A review of transdermal hormonal contraception : focus on the ethinylestradiol/norelgestromin contraceptive patch". Treatments in Endocrinology 5 (6): 359–365. 2006. doi:10.2165/00024677-200605060-00004. PMID 17107221.
- "The transdermal patch and the vaginal ring: two novel methods of combined hormonal contraception". Obstetrics and Gynecology Clinics of North America 34 (1): 31–42, viii. March 2007. doi:10.1016/j.ogc.2007.01.005. PMID 17472863.
- "Transdermal contraception methods: today's patches and new options on the horizon". Expert Opinion on Pharmacotherapy 16 (6): 863–873. April 2015. doi:10.1517/14656566.2015.1022531. PMID 25800084.
- "Transdermal delivery of combined hormonal contraception: a review of the current literature". International Journal of Women's Health 9: 315–321. 2017. doi:10.2147/IJWH.S102306. PMID 28553144.
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