Tell your doctor of all nonprescription or prescription medication you use, especially of: muscle relaxants, antidepressants (tricyclic), tranquilizers, sleep medicine, amantadine, antiparkinson drugs, narcotic pain relievers, cough medicines, quinidine, procainamide, disopyramide, MAO inhibitors (e.g., furazolidone, linezolid, phenelzine, selegiline, tranylcypromine), antihistamines, levodopa, digoxin, ketoconazole, potassium supplements, corticosteroids (e.g., prednisone), amphetamines, alcohol, cimetidine. Do not start or stop any medicine without doctor or pharmacist approval.Read the Belladonna and Opium Drug Interactions Center for a complete guide to possible interactions Learn More »
Source: http://www.rxlist.com