Selection of a Suitable Polymeric Matrix for Chronotherapeutic Drug Delivery: A Comparative Study

  • Rita Lala
  • Nikita Yogesh Nandvikar Mumbai University
Keywords: Chronotherapy, Pulsatile Drug Delivery, Press Coated Tablet.

Abstract

The aim of study was to prepare a chronomodulated press coated tablet having pulse release pattern with the desired lag time for chronic heart disorder. The prepared time-dependent pulse release system consisted of a core drug layer surrounded by polymeric coat. The core consisted of Atenolol (25 mg), while the coating layer consisted of polymer blends of Carbopol 971P:Hydroxypropyl cellulose and Carbopol 971P:Hydroxypropylmethyl cellulose K15M combinations in various ratios. Both combinations were studied for mucoadhasion, swelling. The mucoadhasion for Carbopol 971P:Hydroxypropyl cellulose combination was found to be satisfactory. Increased in the adhesion force was observed as proportion of Carbopol increased for Carbopol 971P:Hydroxypropylmethyl cellulose K15M combination. The swelling rate was increased in both combinations as Carbopol 971 increased. For drug release study pulsatile release pattern was observed for Carbopol 971P:Hydroxypropyl cellulose with lag time up to 12 h. For Carbopol 971P:Hydroxypropylmethyl cellulose K15M  combination pulse and sustained release pattern was observed with lag time up to 7 h and sustained release over a period of 16 h. From the obtained results of polymer studies and in vitro release profile, the tablet prepared with Carbopol 971P:Hydroxypropyl cellulose combination was found to be more suitable for the development of a chronotherapeutic drug delivery system.

Author Biography

Nikita Yogesh Nandvikar, Mumbai University
Pharmaceutics

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Published
2014-08-03
Section
Original Article