Is singulair a sulfa drugAcetazolamide is also a sulfa . . . . . allergies to dust mites, mold, sulfa drugs; severe sciatic; neurotoxicity; chiari 1 . . Tracleer), fluoxetine (Prozac), fosphenytoin (Cerebyx), montelukast (Singulair) or . . over-the-counter drug Sudafed 24 Hour (pseudoephedrine hydrochloride) and Singulair . . . . Find sulfa information, treatments for sulfa and . Below are Singulair (Montelukast) reviews, ratings, comments submitted by patients . . . Posts about Sulfa Drugs . ... more