Clinical data
AHFS/ International Drug Names
Routes of
ATC code G02AD03 (WHO)
Synonyms methyl (E)-7-[(1R,2S,3R)-3-hydroxy-2-[(E,3R)-3-hydroxy-4,4-dimethyl-oct-1-enyl]-5-oxo-cyclopentyl]hept-2-enoate
CAS Number 64318-79-2 YesY
PubChem (CID) 5282237
DrugBank DB08964 N
ChemSpider 4445416 YesY
KEGG D02073 YesY
ECHA InfoCard 100.058.869
Chemical and physical data
Formula C23H38O5
Molar mass 394.545 g/mol
3D model (Jmol) Interactive image
 NYesY (what is this?)  (verify)

Gemeprost (16, 16-dimethyl-trans-delta2 PGE1 methyl ester) is an analogue of prostaglandin E1.

Clinical use

It is used as a treatment for obstetric bleeding.

It is used with mifepristone to terminate pregnancy up to 24 weeks gestation.[1]

Side effects

Vaginal bleeding, cramps, nausea, vomiting, loose stools or diarrhea, headache, muscle weakness; dizziness; flushing; chills; backache; dyspnoea; chest pain; palpitations and mild pyrexia. Rare: Uterine rupture, severe hypotension, coronary spasms with subsequent myocardial infarctions.


  1. Bartley J, Brown A, Elton R, Baird DT (October 2001). "Double-blind randomized trial of mifepristone in combination with vaginal gemeprost or misoprostol for induction of abortion up to 63 days gestation". Human reproduction (Oxford, England). 16 (10): 2098–102. doi:10.1093/humrep/16.10.2098. PMID 11574498. Retrieved 2008-10-29.

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