The pharmacology of carisoprodol is not completely understood.
Metabolites are either conjugated or directly eliminated in urine.
In one patient the half-life was 6 hours. Within 2.5 hours post-ingestion, meprobamate levels exceeded carisoprodol levels in the blood. Non-cns adverse effects include gastrointestinal complaints, tachycardia, and postural hypotension. There may be an exacerbation of the effects of skeletal muscle relaxants when they are taken in combination with other drugs. In an acute overdose, carisoprodol can cause nystagmus, dizziness, confusion, agitation, muscle weakness, coma, shock, respiratory depression, and death.