50 mg or 100 mg every 4-6 hr. Max daily dose: Not to exceed >400 mg. Patient >75 yr Max daily dose: Not to exceed 300 mg. Patient w/ renal impairment 50 mg-100 mg every 12 hr. Patient w/ liver cirrhosis 50 mg every 12 hr.
Patients w/ epilepsy, & those at risk of seizures; increased ICP, head injury, acute abdominal conditions & those dependent on opioids. Use w/ caution & in reduced doses in patients receiving CNS depressants eg, anaesth agents, phenothiazines, tranquilizers, sedative hypnotics, opioids. Concomitant use w/ MAOIs, neuroleptics, or drugs that lower seizure threshold. Use w/ caution w/ anaesth agents or alcohol to avoid risk of resp depression. Pregnancy & lactation.