Oral administration af pseudoephedrin i den rekommanderede dosis kan give andre sympatomimetiske virkninger, såsom øget blodtryk, tachycardi eller manifestationer af stimulation af centralnervesystemet.
Oral administration of pseudoephedrine at the recommended dose can cause other sympathomimetic effects, such as increased blood pressure, tachycardia or manifestations of central nervous system excitation.