Diarrhea is the most common side effect. The antiplatelet agent aspirin (acetylsalicylic acid) is chemically known as benzoic acid, 2- (acetyloxy)-, and has the following structural formula: C 9H 😯 4 Mol. For relaxing stiff muscles: Adults—15 milligrams (mg) once a day Levitra Generisk pris. Rinse cup with more water and have your child drink.