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題 名 | Absorption Study with a Dissolution Independent Drug-Acetaminophen=體內吸收和溶離度無關之Acetaminophen的生體相等性研究 |
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作 者 | 胡幼圃; 何善臺; 詹素妃; 賴金星; 鍾柄泓; | 書刊名 | 藥物食品分析 |
卷 期 | 3:3 1995.09[民84.09] |
頁 次 | 頁155-162 |
分類號 | 418.1 |
關鍵詞 | Acetaminophen錠劑; 相對生體可用率; 藥物動力學; Acetaminophen; Absorption; Natural logarithmic transformation; Pharmacokinetics; |
語 文 | 英文(English) |
英文摘要 | Absorption of acetaminophen has been shown to be dissolution independent in human. Both extent and rate of absorption are important variables in the treatment of pain. The absorption of acetaminophen was studied by using two different acetaminophen tablets DepyretinR manufactured by Veterans Pharmaceutical Plant, Taiwan, and ScanolR, manufactured by Scanpharm, Denmark. Both ScanolR and DepyretinR, each of 500 mg single dose, were administered orally to sixteen healthy young Chinese males with an one-week washout period in a randomized crossover design. Plasma samples used for acetaminophen measurement were taken prior to drug administration and at various times up to 12 hr subsequent to administration. The plasma samples were measured for acetaminophen concentration by an HPLC method. Values for areas under plasma concentration-time curve (extent of absorption), peak plasma concentration, time to peak concentration (rate of absorption), elimination rate constant, elimination half-life and oral clearance were compared for each preparation. Statistical analyses including ANOVA, power analysis and 90% confidence intervals after logarithmic transformation, showed no significant difference in the rate and extent of acetaminophen absorption between Scanol and Depyretin, Furthermore, in vivo absorption did not significantly correlate with in vitro dissolution performance in water. However, differences between these two formulations both in in vitro dissolution and in vivo absorption were not seen. |
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