Absorption: Readily absorbed after oral administration.
Distribution: Unknown.
Metabolism/Excretion: Mostly metabolized by the liver; <1% excreted unchanged in urine.
Half-Life: 1.1 hr.
Time/Action Profile⬆⬇
(skeletal muscle effects)
ROUTE
ONSET
PEAK
DURATION
PO
within 1 hr
12 hr
34 hr
Patient/Family Teaching⬆⬇
Instruct patient to take medication as directed; do not take more than the prescribed amount. Missed doses should be taken within 1 hr of time ordered; otherwise, omit and return to normal dose schedule. Do not double doses.
Medication may cause drowsiness and dizziness. Caution patient to avoid driving or other activities requiring alertness until response to drug is known.
Instruct patient to notify health care professional if early signs and/or symptoms of hepatotoxicity (fever, rash, anorexia, nausea, vomiting, fatigue, right upper quadrant pain, dark urine, jaundice); discontinue medication immediately if signs and symptoms occur.
Advise patient to avoid concurrent use of alcohol or other CNS depressants, including opioids with this medication; may cause overdose.
If constipation becomes a problem, advise patient that increasing fluid intake and bulk in diet and stool softeners may alleviate this condition.
Rep: Advise females of reproductive potential to notify health care professional if pregnancy is planned or suspected or if breastfeeding.