--Mefenamic Acid: Nausea, vomiting, diarrhea, indigestion, heartburn, stomach pain, constipation, rash, dizziness, headache, itching, ringing in ears, nervousness, sweating, blurred vision, photosensitivity, hematopoietic disorders, kidney disorders, liver disorders. Paracetamol: Allergic reactions, skin rashes, blood disorders, acute renal tubular necrosis, liver damage.