Discontinue use if serotonin syndrome is suspected. Not to be used during asthma attack. Hypothyroidism; adrenal insufficiency. Long-term use. Avoid alcohol use. Concomitant use w/ serotonergic drugs, benzodiazepines. May impair ability to drive or operate machinery. Chronic hepatic disease, renal insufficiency. Pregnancy. Not to be used during lactation. Not recommended in childn <4 yr. Elderly.