Design, Evaluation and Optimization of Albuterol Sulphate and Theophylline Pulsincap drug delivery system for chronotherapy of Asthma

The aim of the current study was to design and develop and evaluate pulsatile drug delivery system of Albuterol Sulphate and Theophylline for the treatment of Asthma. The capsule body was made water insoluble by cross linked with formaldehyde vaopur. The treatment of Formalin was adopted to modify the gelatin capsule solubility. The formalin residue was carried out by quantitative test. The drug-excipient compatibility is done by FTIR and UV . The pulsincap formulation were prepared by using hydrogel plug of various components. The drug content of the formulation of pulsincap was found to be in the general range. The invitro drug release studies in ph1.2 .6.2 and 7.4 buffern was noticed to be zero percent and capsule was stable for 2 hours drug the studyF5 formulation batch was selected which was best and good formulation and promoted maximum drug release of  96.29%   percentage at  phosphate buffers when compared with other formulation. Pulsincap formulation can be adopted for optimum delivery of pellets in the treatment as per chronotherapy Keywords:  Theophylline, quantitative test, invitro drug release studies, phosphate buffers6.2 and 7.4.