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Extemporaneous procedures for dissolving risedronate tablets for oral administration and for feeding tubes.
Annals of Pharmacotherapy 2005 January
BACKGROUND: Risedronate (Actonel, Procter & Gamble Pharmaceuticals) is commercially available only as film-coated tablets. Extemporaneous procedures for dissolving tablets for feeding tubes and for preparation of an oral liquid have not previously been evaluated.
OBJECTIVE: To evaluate procedures for dissolving risedronate sodium tablets for administration in liquid form and drug recovery following dissolution in cups and following passage through different types of feeding tubes.
METHODS: Tablets (5 and 35 mg) were individually dispersed in 2 oz of water. After 2 minutes, the solution was stirred for 30 seconds, dispensed, and rinsed with an additional 4 oz of water. The sample was filtered and analyzed by HPLC. Ten replicates were performed using the various cups. Gastrostomy and nasoenteric tubes were flushed with 1 oz of water. Individual tablets were dispersed in 2 oz of water; after 2 minutes, the solution was stirred for 30 seconds and poured through the tube and flushed with 1 oz of water. Samples were filtered and analyzed by HPLC. Ten replicates were performed for each type of feeding tube.
RESULTS: For cups, the mean amount of drug recovered ranged from 95.7% to 100.5% of the label claim, with a relative standard deviation (RSD) range of 1.1-6.3%. For gastrostomy and nasoenteric tubes, the mean amount of drug recovered ranged from 98.3% to 101.9% of label claim, with an RSD range of 0.9-3.3%.
CONCLUSIONS: A simple and accurate procedure was developed for dissolving risedronate tablets in water to prepare a liquid formulation for administration orally or through feeding tubes.
OBJECTIVE: To evaluate procedures for dissolving risedronate sodium tablets for administration in liquid form and drug recovery following dissolution in cups and following passage through different types of feeding tubes.
METHODS: Tablets (5 and 35 mg) were individually dispersed in 2 oz of water. After 2 minutes, the solution was stirred for 30 seconds, dispensed, and rinsed with an additional 4 oz of water. The sample was filtered and analyzed by HPLC. Ten replicates were performed using the various cups. Gastrostomy and nasoenteric tubes were flushed with 1 oz of water. Individual tablets were dispersed in 2 oz of water; after 2 minutes, the solution was stirred for 30 seconds and poured through the tube and flushed with 1 oz of water. Samples were filtered and analyzed by HPLC. Ten replicates were performed for each type of feeding tube.
RESULTS: For cups, the mean amount of drug recovered ranged from 95.7% to 100.5% of the label claim, with a relative standard deviation (RSD) range of 1.1-6.3%. For gastrostomy and nasoenteric tubes, the mean amount of drug recovered ranged from 98.3% to 101.9% of label claim, with an RSD range of 0.9-3.3%.
CONCLUSIONS: A simple and accurate procedure was developed for dissolving risedronate tablets in water to prepare a liquid formulation for administration orally or through feeding tubes.
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