Baltussin

Chlorphenamine (CP, CPM), also known as chlorpheniramine, is an antihistamine used to treat the symptoms of allergic conditions such as allergic rhinitis (hay fever).[2] It is taken by mouth.[2] The medication takes effect within 2 hours and lasts for about 4-6.[2] Common side effects include sleepiness, restlessness, and weakness.[2] Other side effects may include dry mouth and wheeziness.[2] It is a first-genera... [wikipedia]