'''Ergometrin''', juga dikenal sebagai '''ergonovin''', adalah obat yang digunakan untuk menyebabkan kontraksi rahim untuk mengobati [[Pendarahan pascapersalinan|pendarahan vagina yang parah setelah melahirkan]].<ref name=AHFS2015>{{cite web|title=Ergonovine Maleate|url=https://www.drugs.com/monograph/ergonovine-maleate.html|publisher=The American Society of Health-System Pharmacists|access-date=1 December 2015|url-status=live|archive-url=https://web.archive.org/web/20151225224708/http://www.drugs.com/monograph/ergonovine-maleate.html|archive-date=2015-12-25}}</ref><ref name="MortonHall1999">{{cite book| vauthors = Morton IK, Hall JM |title=Concise Dictionary of Pharmacological Agents: Properties and Synonyms|url=https://books.google.com/books?id=mqaOMOtk61IC&pg=PA113|date=31 October 1999|publisher=Springer Science & Business Media|isbn=978-0-7514-0499-9|pages=113–}}</ref> Obat ini dapat digunakan melalui mulut, disuntikkan ke otot, atau disuntikkan ke pembuluh darah. IniObat ini mulai bekerja dalam waktu 15 menit ketika diminum dan lebih cepat timbulnya ketika digunakan melalui suntikan. Efeknya bertahan antara 45 dan 180 menit.<ref name=AHFS2015/>
Efek samping yang umum termasuk [[tekanan darah tinggi]], muntah, kejang[[sawan]], sakit kepala, danatau [[tekanan darah rendah]]. Efek samping serius lainnya termasuk ergotisme.<ref name=AHFS2015> Awalnya terbuat dari jamur rye''Claviceps ergotpurpurea'' tetapi bisa juga dibuat dari [[asam lisergat dietilamida]] (LSD).<ref name=Rav2011/><ref>{{cite book| vauthors = Sneader W |title=Drug Discovery: a History |date=2005 |publisher=Wiley |location=Chichester|isbn=9780471899792|page=349|edition=Rev. and updated|url=https://books.google.com/books?id=Cb6BOkj9fK4C&pg=PA349|url-status=live|archive-url=https://web.archive.org/web/20151226180447/https://books.google.ca/books?id=Cb6BOkj9fK4C&pg=PA349|archive-date=2015-12-26}}</ref> Ergometrine diatur karena dapat digunakan untuk membuat asam lisergat dietilamida (LSD).<ref>{{cite book| vauthors = King LA |title=Forensic chemistry of substance misuse : a guide to drug control|date=2009|publisher=Royal Society of Chemistry|location=Cambridge, UK|isbn=9780854041787|page=190|url=https://books.google.com/books?id=x9Z1QZ5NIEIC&pg=PA190|url-status=live|archive-url=https://web.archive.org/web/20151226165636/https://books.google.ca/books?id=x9Z1QZ5NIEIC&pg=PA190|archive-date=2015-12-26}}</ref>
ErgometrineErgometrin ditemukan pada tahun 1932.<ref name=Rav2011>{{cite book| vauthors = Ravina E |title=The evolution of drug discovery : from traditional medicines to modern drugs|date=2011|publisher=Wiley-VCH|location=Weinheim|isbn=9783527326693|page=245|edition= 1st |url=https://books.google.com/books?id=iDNy0XxGqT8C&pg=PA245|url-status=live|archive-url=https://web.archive.org/web/20151226162800/https://books.google.ca/books?id=iDNy0XxGqT8C&pg=PA245|archive-date=2015-12-26}}</ref> Obat ini termasuk dalam [[Daftar Obat Esensial Organisasi Kesehatan Dunia]].<ref name="WHO21st">{{cite book | vauthors = ((World Health Organization)) | title = World Health Organization model list of essential medicines: 21st list 2019 | year = 2019 | hdl = 10665/325771 | author-link = World Health Organization | publisher = World Health Organization | location = Geneva | id = WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO | hdl-access=free }}</ref><ref name="WHO22nd">{{cite book | vauthors = ((World Health Organization)) | title = World Health Organization model list of essential medicines: 22nd list (2021) | year = 2021 | hdl = 10665/345533 | author-link = World Health Organization | publisher = World Health Organization | location = Geneva | id = WHO/MHP/HPS/EML/2021.02 | hdl-access=free }}</ref>