Studies on the physical properties of tablets and tablet excipients. I. Adsorption of drugs to cellulose used in tablets

Nyqvist, H.; Lundgren, P.; Nyström, C.; Wadsten, T.

Acta Pharmaceutica Suecica 15(2): 150-159

1978


ISSN/ISBN: 0001-6675
PMID: 27944
Document Number: 3660
The adsorption of drugs to Avicel pH 101 and some other cellulose materials was studied in vitro. Langmuir adsorption isotherms were established at pH-values in the range of 2.0-8.5 at 25°C. The adsorption was completely reversible at pH 7.5. Different batches of Avicel pH 101 showed varying adsorptive capacities.

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Studies on the physical properties of tablets and tablet excipients. I. Adsorption of drugs to cellulose used in tablets