Promethaine
Brand names,
Promethaine
Analogs
Promethaine
Brand Names Mixture
- Phenergan VC Expectorant Syrup (Phenylephrine hydrochloride + Potassium guaiacol sulphonate + Promethazine hydrochloride)
Promethaine
Chemical_Formula
C17H20N2S
Promethaine
RX_link
http://www.rxlist.com/cgi/generic3/phenergan.htm
Promethaine
fda sheet
Promethaine
msds (material safety sheet)
Promethaine
Synthesis Reference
Charpentier, U.S. Pat. 2,503,451 (1950)
Promethaine
Molecular Weight
284.42 g/mol
Promethaine
Melting Point
60oC
Promethaine
H2O Solubility
Freely soluble
Promethaine
State
Solid
Promethaine
LogP
4.946
Promethaine
Dosage Forms
Tablet; Suppository; Opthalmic drops; Syrup
Promethaine
Indication
For the treatment of allergic disorders, itching, nausea and vomiting.
Promethaine
Pharmacology
Promethazine, a phenothiazine, is an H1-antagonist with anticholinergic, sedative, and antiemetic effects and some local anesthetic properties. Promethazine is used as an antiemetic or to prevent motion sickness.
Promethaine
Absorption
On average, 88% of a promethazine dose is absorbed after oral administration; however, the absolute bioavailability is only 25% because of first-pass clearance.
Promethaine
side effects and Toxicity
Symptoms of overdose include mild depression of the central nervous system and cardiovascular system to profound hypotension, respiratory depression, unconsciousness, and sudden death. Other reported reactions include hyperreflexia, hypertonia, ataxia, athetosis, and extensor-plantar reflexes (Babinski reflex). LD50=55mg/kg (I.V. in mice)
Promethaine
Patient Information
Promethaine
Organisms Affected
Humans and other mammals