Diclofenac Na: GI disorders, peptic ulceration, GI bleeding, vertigo, headache, skin rashes, pruritus, tinnitus, depression, drowsiness, nervousness, insomnia, irritability, agitation, minor hearing disorders, edema, palpitations, blurred vision, ocular reactions; hypersensitivity reactions; abnormalities in liver function tests. Paracetamol: Skin rashes & other allergic reactions. Chlorzoxazone: GI disturbances, drowsiness, nausea, dizziness, lightheadedness, malaise or overstimulation.