Medicine Name: Dovy-M Tablet. Composition: Drotaverine (80mg) + Mefenamic Acid (250mg). Side Effects: Nausea Vomiting Diarrhea Dryness in mouth Heartburn Vertigo Insomnia difficulty in sleeping Hypotension low blood pressure Fast heart rate Sweating Constipation Increased liver enzymes Increased white blood cell count eosinophils Decreased white blood cell count lymphocytes Low blood platelets Purpura Agranulocytosis deficiency of granulocytes in the blood Breathlessness Ringing in ear Abdominal pain Flatulence Indigestion Stomach inflammation Confusion Depression.