Metenarin
Brand names,
Metenarin
Analogs
Metenarin
Brand Names Mixture
Metenarin
Chemical_Formula
C20H25N3O2
Metenarin
RX_link
http://www.rxlist.com/cgi/generic2/methylerg.htm
Metenarin
fda sheet
Metenarin
msds (material safety sheet)
Metenarin
Synthesis Reference
A. Stoll et al., eidem, Helv. Chim. Acta. 26, 944 (1943)
Metenarin
Molecular Weight
339.432 g/mol
Metenarin
Melting Point
172 oC
Metenarin
H2O Solubility
25 mg/mL
Metenarin
State
Solid
Metenarin
LogP
1.01
Metenarin
Dosage Forms
Injection (intramuscular or intravenous); Tablet
Metenarin
Indication
For the prevention and control of excessive bleeding following vaginal childbirth
Metenarin
Pharmacology
Methylergonovine is a semisynthetic ergot alkaloid and a derivative of ergonovine and is used for the prevention and control of postpartum and post-abortion hemorrhage. In general, the effects of all the ergot alkaloids appear to results from their actions as partial agonists or antagonists at adrenergic, dopaminergic, and tryptaminergic receptors. The spectrum of effects depends on the agent, dosage, species, tissue, and experimental or physiological conditions. All of the alkaloids of ergot significantly increase the motor activity of the uterus. After small doses contractions are increased in force or frequency, or both, but are followed by a normal degree of relaxation. As the dose is increased, contractions become more forceful and prolonged, resting tonus is markedly increased, and sustained contracture can result.
Metenarin
Absorption
Absorption is rapid after oral (60% bioavailability) and intramuscular (78% bioavailability) administration.
Metenarin
side effects and Toxicity
Signs and symptoms of overexposure: hypertension, seizures, headache, hypotension, nausea, and vomiting.
Metenarin
Patient Information
Metenarin
Organisms Affected
Humans and other mammals