Microspheres are well accepted technique to control the drug release from the dosage form to improve bioavailability, reduce absorption difference in patients, reduce the dosing frequency and adverse effects during prolong treatment. The main objective of the present study was to prepare and evaluate ibuprofen microspheres by external ionic gelation method, with water soluble polymers such as sodium alginate and calcium chloride as crosslinking agent, using as carrier for oral administration in view to achieve oral sustained release of the drug. Ibuprofen is a non-steroidal anti-inflammatory drug (NSAID) used for relief of signs and symptoms of rheumatoid arthritis, osteoarthritis and is used in chronic and acute conditions of pain and inflammation. Its biological half-life is 2±0.5 hrs. Due to its low biological half-life (2 hrs), it requires frequent administration to maintain plasma concentration. This causes inconvenience to the patient and also leads fluctuations in plasma drug concentration that may cause inferior therapeutic effects or toxic effects. Therefore, development of controlled release dosage forms would clearly be beneficial in terms of decreased dosage requirements, thus increase patient compliance. The formulations were evaluated for particle size distribution analysis, flow properties like angle of repose, bulk density, tapped density, hausner’s ratio, carr’s index, encapsulation efficiency, scanning electron microscopy, optical electron microscopy and in-vitro release studies. The optimized formulation showed good in-vitro sustained release activity of the drug ibuprofen.
Loading....