Ergometrine

Ergometrine, also known as ergonovine and sold under the brand names Ergotrate, Ergostat, and Syntometrine among others, is a medication used to cause contractions of the uterus to treat heavy vaginal bleeding after childbirth. It can be used either by mouth, by injection into a muscle, or injection into a vein. It begins working within 15 minutes when taken by mouth and is faster in onset when used by injection. Effects last between 45 and 180 minutes.

Ergometrine
Clinical data
Trade namesErgometrine Maleate, Ergonovine Maleate, Ergotrate, Ergotrate Maleate, Ergostat, Syntometrine, others
Other namesergonovine; d-lysergic acid β-propanolamide; d-lysergic acid α-hydroxymethylethylamide
AHFS/Drugs.comMonograph
Pregnancy
category
  • X
Routes of
administration		By mouth
ATC code
Legal status
Legal status
Pharmacokinetic data
MetabolismLiver (partly CYP3A4)
Elimination half-life2-phase (10 min; 2 hrs)
ExcretionBiliary
Identifiers
  • (6aR,9R)-N-((S)-1-Hydroxypropan- 2-yl)-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.000.441
Chemical and physical data
FormulaC19H23N3O2
Molar mass325.412 g·mol−1
3D model (JSmol)
SMILES
  • [H][C@@]12Cc3c[nH]c4cccc(C1=C[C@@H](C(=O)N[C@@H](C)CO)CN2C)c34
  • InChI=1S/C19H23N3O2/c1-11(10-23)21-19(24)13-6-15-14-4-3-5-16-18(14)12(8-20-16)7-17(15)22(2)9-13/h3-6,8,11,13,17,20,23H,7,9-10H2,1-2H3,(H,21,24)/t11-,13+,17+/m0/s1 Y
  • Key:WVVSZNPYNCNODU-XTQGRXLLSA-N Y
  (verify)

Common side effect include high blood pressure, vomiting, seizures, headache, and low blood pressure. Other serious side effects include ergotism. It was originally made from the rye ergot fungus but can also be made from lysergic acid. Ergometrine is regulated because it can be used to make lysergic acid diethylamide (LSD).

Ergometrine was discovered in 1932. It is on the World Health Organization's List of Essential Medicines.

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