If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this medication. Return to top These products should be avoided if you have narrow-angle glaucoma or difficulty urinating, if you are taking one of the antidepressant drugs known as MAO inhibitors or have taken one within the past two weeks, if you have severe high blood pressure, severe heart disease, or an overactive thyroid, or if you are sensitive to or have ever had an allergic reaction to any of its ingredients. This drug should not be used to treat asthma and other lower respiratory tract diseases. Special warnings about this medication Return to top These products should be used with care if you have a peptic ulcer or other upper intestinal obstruction, bladder obstruction due to an enlarged prostate or other bladder problems, a history of bronchial asthma, heart disease, high blood pressure, increased eye pressure, or diabetes.
Pseudoephedrine can be habit-forming at high doses.
Remember that this medication can make you feel drowsy. Be careful driving, operating machinery, or using appliances. It is also more likely to cause such side effects as confusion, convulsions, hallucinations, and death in this age group. Possible food and drug interactions when taking this medication Return to top Alcohol may increase the effects of this medication. Do not drink alcohol while taking this medication.