Adult & childn ≥12 yr 1 tab once daily. Childn 6-11 yr ½ tab once daily. Renal impairment:Adult& childn ≥12 yr Severe (CrCl 10-30 mL/min) ½ tab twice wkly (administer once every 3-4 days), moderate (CrCl 30-50 mL/min) ½ tab once every other day, mild (CrCl 50-80 mL/min) ½ tab once daily.
Avoid concomitant use w/ alcohol or other CNS depressants. Patients w/ predisposing factors of urinary retention (eg, spinal cord lesion, prostatic hyperplasia); discontinue if urinary retention occurs. May impair ability to drive or operate machinery. Pregnancy & lactation.