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Estrone/progesterone

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Estrone/progesterone
Estrone (top) and
progesterone (bottom)
Combination of
EstroneEstrogen
ProgesteroneProgestogen
Clinical data
Trade namesSynergon[1][2]
Other namesE1/P4
Routes of
administration		Intramuscular injection

Estrone/progesterone (E1/P4), sold under the brand name Synergon, is a combination medication formulation of estrone, an estrogen, and progesterone, a progestogen. E1/P4 is used as an injectable preparation to induce withdrawal bleeding in women with non-pregnancy-related amenorrhea (absence of menstruation).[3][1][2][4] [5][6][7] It has also sometimes been used off-label as an abortifacient.[5][6][8] The medication comes in a three-ampoule pack, contains 1 mg estrone and 10 mg progesterone per ampoule, and is administered by intramuscular injection.[3][5][6][9] The usual dose of the medication is three injections, each two days apart, with the treatment duration not exceeding one week.[3] E1/P4 is or has been available in France, Monaco, and Turkey, as well as in some French-speaking African countries such as Benin and Cameroon.[1][2][4][10][6][8] The medication has been marketed since at least 1952.[11]

This combination medication is currently not available in the United States, where progesterone either alone or in combination with estrogen is used to improve menopausal symptoms. Transdermal progesterone (skin patch) and oral micronized progesterone (which is chemically identical to the progesterone produced in women's bodies) have each been shown to be effective treatments for certain symptoms of menopause such as hot flashes and night sweats, otherwise known as vasomotor symptoms or VMS.[12] Additionally, micronized progesterone cream and micronized progesterone in combined menopausal hormone therapy are both beneficial in preventing skin aging in post-menopausal women. However, there have not been any studies done yet on the effects of micronized progesterone on hair loss due to menopause.[13]

Despite suggestions for using hormone therapy to prevent loss of muscle mass in post-menopausal women (women who are 50 years or older), menopausal hormone therapy involving either estrogen alone or estrogen and progesterone has not been found to preserve muscle mass.[14] Menopausal hormone therapy also does not result in body weight reduction, BMI reduction, or change in glucose metabolism.[15]

See also

References

  1. ^ a b c "Estrone". Drugs.com. Archived from the original on 2018-06-21. Retrieved 2019-04-12.
  2. ^ a b c "Progesterone". Drugs.com. Retrieved 2019-04-12.
  3. ^ a b c "Synergon label" (PDF).
  4. ^ a b Sweetman SC, ed. (2009). "Sex hormones and their modulators". Martindale: The Complete Drug Reference (36th ed.). London: Pharmaceutical Press. pp. 2101, 2127. ISBN 978-0-85369-840-1. Estrone [...] Progesterone [...] Multi-ingredient: [...] Fr.: Synergon [...] Turk.: Synergon
  5. ^ a b c Addo VN, Tagoe-Darko ED (June 2009). "Knowledge, practices, and attitudes regarding emergency contraception among students at a university in Ghana". International Journal of Gynaecology and Obstetrics. 105 (3): 206–209. doi:10.1016/j.ijgo.2009.01.008. PMID 19232600. S2CID 22216977. Synergon, a combination of progesterone and oestrone in an injectable form, is marketed to induce withdrawal bleeding in women with nongravid amenorrhea; however, it can be used as an arbortifacient [11].
  6. ^ a b c d Kongnyuy EJ, Ngassa P, Fomulu N, Wiysonge CS, Kouam L, Doh AS (July 2007). "A survey of knowledge, attitudes and practice of emergency contraception among university students in Cameroon". BMC Emergency Medicine. 7: 7. doi:10.1186/1471-227X-7-7. PMC 1933435. PMID 17634106. Synergon is dedicated product made up of a combination of progesterone and oestrone in an injectable form. It is used to induce withdrawal bleeding in cases of non-gravid amenorrhoea. In Cameroon, synergon is widely used among students as an abortifacient and is usually administered clandestinely by nurses when a woman presents with amenorrhoea. Such an attitude stemmed from the fact that this product induces withdrawal bleeding, so that some cases of amenorrhoea falsely believed to be due pregnancy are resolved by one or a few intramuscular injections of Synergon. We are not aware of similar findings reported from other countries. Synergon is not produced by the manufacturer as an abortifacient; how it came to be associated with abortion in Cameroon is not known. It is also not known whether it actually induces abortion or it only induces withdrawal bleeding in women with non-gravid amenorrhoea.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  7. ^ Romero R, Nicolaides KH, Conde-Agudelo A, O'Brien JM, Cetingoz E, Da Fonseca E, et al. (September 2016). "Vaginal progesterone decreases preterm birth ≤ 34 weeks of gestation in women with a singleton pregnancy and a short cervix: an updated meta-analysis including data from the OPPTIMUM study". Ultrasound in Obstetrics & Gynecology. 48 (3): 308–317. doi:10.1002/uog.15953. PMC 5053235. PMID 27444208.
  8. ^ a b Baxerres C, Boko I, Konkobo A, Ouattara F, Guillaume A (February 2018). "Abortion in two francophone African countries: a study of whether women have begun to use misoprostol in Benin and Burkina Faso". Contraception. 97 (2): 130–136. doi:10.1016/j.contraception.2017.10.011. PMID 29104024. It is not hard to find [abortion] services in Cotonou [Benin]. [...] The most commonly used method was [manual vacuum aspiration], followed by curettage, and more rarely a Synergon® (progesterone + estrone) injection, a product indicated in the symptomatic treatment of non-gravid amenorrhea.8
  9. ^ McDonnell K (1986). Adverse Effects: Women and the Pharmaceutical Industry. International Organization of Consumers Unions, Regional Office for Asia and the Pacific. p. 15. ISBN 978-967-9973-17-4. Synergon. 10 mg progesterone. 1 mg folliculine [estrone].
  10. ^ "Synergon Indications". Generic Drugs. ndrugs.com.
  11. ^ Endokrinologie. Johann Ambrosius Barth Verlag. 1952. Synergon. Progesterone + Follikulin [Estrone]. Amp. Lab. Hépat.
  12. ^ Dolitsky, Shelley N.; Cordeiro Mitchell, Christina N.; Stadler, Sarah Sheehan; Segars, James H. (2021). "Efficacy of progestin-only treatment for the management of menopausal symptoms: a systematic review". Menopause. 28 (2): 217–224. doi:10.1097/GME.0000000000001676. ISSN 1530-0374.
  13. ^ Gasser, S.; Heidemeyer, K.; von Wolff, M.; Stute, P. (2021). "Impact of progesterone on skin and hair in menopause – a comprehensive review". Climacteric. 24 (3): 229–235. doi:10.1080/13697137.2020.1838476. ISSN 1369-7137.
  14. ^ Javed, Ayesha A.; Mayhew, Alexandra J.; Shea, Alison K.; Raina, Parminder (2019). "Association Between Hormone Therapy and Muscle Mass in Postmenopausal Women: A Systematic Review and Meta-analysis". JAMA Network Open. 2 (8): e1910154. doi:10.1001/jamanetworkopen.2019.10154. ISSN 2574-3805. PMC 6716293. PMID 31461147.
  15. ^ Coquoz, A.; Gruetter, C.; Stute, P. (2019). "Impact of micronized progesterone on body weight, body mass index, and glucose metabolism: a systematic review". Climacteric. 22 (2): 148–161. doi:10.1080/13697137.2018.1514003. ISSN 1369-7137.
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