The release of aspirin from certain suppository bases, mainly oleaginous and water sol., were studied in-vitro by using pH 8 phosphate buffer as the releasing medium. In this study, infant-size suppositories contg. 100 mg aspirin were prepd. and tested by using diffusion cell of 2 compartments sepd. by semipermeable cellophane membrane. After 5 h, 40.6% aspirin was released from Witepsol H15 compared to 24.9% for Suppocire AM. While a base composed of 50% from each of the above formulation showed the lowest release (18.6%). Addn. of 5% Tween 80 enhanced the total aspirin release. Aspirin release from a water-sol. base was 31.7% after 5 h. Salicylic acid resulting from the hydrolysis of aspirin in the diffusion medium was detd. The percent salicylic acid diffused to the total aspirin ranged from 43.7 to 72.6%. Also, the addn. of Tween 80 decreased the salicylic acid released from 59.6 to 43.7%. The results obtained were compared with a com. suppository contg. 130 mg aspirin. A direct relationship was found between the release rate consts. and the dialysis rate consts.
Fouad, E., & Mohammad, F. (2000). Release kinetics of aspirin from suppositories. Bulletin of Pharmaceutical Sciences Assiut University, 23(1), 23-30. doi: 10.21608/bfsa.2000.65973
MLA
E. A. Fouad; F. A. Mohammad. "Release kinetics of aspirin from suppositories". Bulletin of Pharmaceutical Sciences Assiut University, 23, 1, 2000, 23-30. doi: 10.21608/bfsa.2000.65973
HARVARD
Fouad, E., Mohammad, F. (2000). 'Release kinetics of aspirin from suppositories', Bulletin of Pharmaceutical Sciences Assiut University, 23(1), pp. 23-30. doi: 10.21608/bfsa.2000.65973
VANCOUVER
Fouad, E., Mohammad, F. Release kinetics of aspirin from suppositories. Bulletin of Pharmaceutical Sciences Assiut University, 2000; 23(1): 23-30. doi: 10.21608/bfsa.2000.65973