If I am alergic to aspirin can i take mucinex?

Yes. Some over the counter medications actually contain both.

According to the Drugs.com (commercial website) "Drug Interactions Checker" (refer to the link, below), as of April 8, 2009, there are no known interaction issues between the two medications, ibuprofen and Mucinex.

However, you should always check with your doctor or pharmacist before combining any medicines or medications, whether or not they were prescribed by your doctor.