Stability Implications of Repackaging Paracetamol Tablets into Dose Administration Aids.

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Haywood, A
Mangan, M
Glass, B
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Professor Jo-anne E Brien
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2006
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Abstract

Background: Despite the widespread use of dose administration aids (DAAs) there is little available data on the stability of drugs during repackaging or storage in these devices. Aim: To investigate the physicochemical stability of paracetamol tablets repackaged in DAAs. Method: Physicochemical stability studies were performed on a commonly used paracetamol tablet directly after heat-sealing in a DAA frequently employed in practice, then at ambient (25ꃻ 60% relative humidity) and accelerated (40 ꃻ 75% relative humidity) conditions, over a 3-month period. Physical characteristics of the tablets (weight uniformity, physical appearance, thickness, hardness, friability, disintegration, dissolution rates) were evaluated at time = 0, directly after heatsealing, 1 month and 3 months. Chemical stability was confirmed by high performance liquid chromatography (HPLC). The results were compared to control samples stored in the original packaging at the various environmental conditions studied. Results: All compendial requirements for physicochemical stability were met for both ambient and accelerated conditions over the 3-month period. Chemical stability of paracetamol content fell within the required range of 95-105% of the labelled amount, for all environmental conditions. Conclusion: This study provides evidence on the stability of paracetamol tablets in a DAA, to support pharmacists in making sound clinical and operational decisions regarding the repackaging of paracetamol in these devices.

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Journal of Pharmacy Practice and Research
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© 2006 Journal of Pharmacy Practice and Research. The attached file is reproduced here in accordance with the copyright policy of the publisher.
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Pharmacology and pharmaceutical sciences
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