SALT INFORMATIONIbuprofen (400mg) TYPICAL USAGE Analgesic, antipyretic, dysmenorrhoea, rheumatoid arthritis, osteoarthritis, musculo skeletal disorders, soft tissue injuries, tooth extraction, post-partum and post operatively, acute gout. Juvenile idiopathic arthritis. SIDE EFFECTS Dyspepsia, vomitting, abdominal pain, heart burn, nausea, diarrhoea, epigastric pain, edema, fluid retention, dizziness, rash, tinnitu DRUG INTERACTION Reduces effects of antihypertensives. Enhanced effect with moclobemide. Increased risk of GI bleeding with warfarin. MECHANISM OF ACTION Ibuprofen exhibits anti-inflammatory, analgesic and antipyretic activities. Its analgesic effect is independent of anti-inflammatory activity and has both central and peripheral effects. It potently inhibits the enzyme cyclooxygenase resulting in the blockage of prostaglandin synthesis. It also prevents formation of thromboxane A2 by platelet aggregation. Paracetamol(500mg) TYPICAL USAGE Ear pain, fever, headache, malaise, migraine, mild to moderate pain, pain, post-vaccine reaction, short-bowel syndrome. SIDE EFFECTS Bronchospasm, blood dyscrasias, centribular necrosis, liver damage, hypoglycemic coma, hepatic necrosis, liver failure, skin rashes, GI adverse effects. DRUG INTERACTION Paracetamol is known to interact with other drugs like alcohol, ascorbic acid, azilisartan medoxomil, busulphan, carbamazepine, chloramphenicol, cimetidine (HCl), diflunisal, interferon alpha, isoniazid, itopride (HCl), metoclopramide (HCl). Always consult your physician for the change of dose regimen or an alternative drug of choice that may strictly be required. MECHANISM OF ACTION Paracetamol is thought to act primarily in the CNS, increasing the pain threshold by inhibiting both isoforms of cyclooxygenase, COX-1, COX-2, and COX-3 enzymes involved in prostaglandin (PG) synthesis. Paracetamol indirectly blocks COX, and that this blockade is ineffective in the presence of peroxides. paracetamol is effective in the central nervous system and in endothelial cells but not in platelets and immune cells which have high levels of peroxides. The antipyretic properties of paracetamol are likely due to direct effects on the heat-regulating centres of the hypothalamus resulting in peripheral vasodilation, sweating and hence heat dissipation.