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        Pulsatile Multiparticulate Drug Delivery System for Metoprolol Succinate

        Swati C. Jagdale,Sachin M. Chede,Ram Gulwady,Bhanudas S. Kuchekar,Pradeep D. Lokhande,Tejas P. Shah,Anuruddha R. Chabukswar 대한약학회 2011 Archives of Pharmacal Research Vol.34 No.3

        Cardiovascular diseases and their treatment pose a great challenge. Many instances of cardiovascular disease occur in the early morning hours. Hence, the objective of this study was to develop a time-controlled release formulation of metoprolol succinate based on a pulsatile multiparticulate (pellets) drug delivery system. The formulation was intended to be administered in the evening at 22:00 hours to evaluate symptoms of cardiovascular disease that are experienced in the early morning hours (from 04:00 to 06:00). Drug layering followed by a swelling layer and finally by an insoluble coat application was done using a Sanmour fluid bed processor. Metoprolol succinate layered on sugar pellets (74% w/w) layered with 20% (w/w) ion doshion resin P-547 and coated with 15% (w/w) ethocel with the addition of 20% castor oil showed a lag time of 4 h and was then followed a sigmoidal release pattern with more than 95% drug having been released by the 10th h.

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