Injectable taxol composition with improved stability

A - Human Necessities – 61 – K

Patent

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Details

A61K 47/12 (2006.01) A61K 9/08 (2006.01) A61K 31/335 (2006.01) A61K 31/337 (2006.01) A61K 47/02 (2006.01) A61K 47/10 (2006.01) A61K 47/14 (2006.01) A61K 47/44 (2006.01)

Patent

CA 2149150

A composition of taxol and polyethoxylated castor oil is pH balanced to have a pH less man 8.1 to improve stability. This composition can include an acid, preferably citric acid, to adjust the pH value. The invention includes a method of formulating a taxol solution for injection by mixing an acid with a carrier material, such as castor oil, to form a carrier solution after which taxol is mixed with the carrier solution to form the taxol solution at a pH of less than 8.1. The method may include the step of slurrying the taxol in alcohol before mixing with the carrier solution.

Une composition de taxol et d'huile de ricin polyéthoxylée est équilibrée par rapport au pH, de façon à présenter un pH inférieur à 8,1, afin d'en améliorer la stabilité. Cette composition peut comprendre un acide, de préférence l'acide citrique, permettant d'ajuster la valeur du pH. L'invention se rapporte également à un procédé de formulation d'une solution de taxol destinée à être injectée, et consistant à mélanger un acide avec une substance formant un excipient, telle que l'huile de ricin, pour former un excipient en solution, après quoi le taxol est mélangé avec ladite solution pour former la solution de taxol présentant un pH inférieur à 8,1. Le procédé peut comprendre une étape de formation d'une suspension épaisse du taxol dans l'alcool précédant l'étape de mélange avec l'excipient.

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