High concentration local anesthetic formulations

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/00 (2006.01) A61K 31/00 (2006.01) A61K 47/10 (2006.01) A61K 47/14 (2006.01) A61K 47/26 (2006.01) A61K 47/44 (2006.01)

Patent

CA 2696632

A transdermal topical anesthetic formulation, which can be used to ameliorate or inhibit neuropathic pain, has been developed. In the preferred embodiment, the topical anesthetic is a local anesthetic such as lidocaine, most preferably lidocaine free-base in a gel, and the dosage of the local anesthetic is effective in the painful area or immediately adjacent areas, to ameliorate or eliminate the pain. High concentration of local anesthetic in solution in the carrier is used to drive rapid release and uptake of the drug. Relief is typically obtained for a period of several hours.

L'invention concerne une formulation anesthésique topique transdermique qui a été développée et qui peut être utilisée pour améliorer ou inhiber une douleur neuropathique. Dans le mode de réalisation préféré, l'anesthésique topique est un anesthésique local tel que la lidocaïne, idéalement de la lidocaïne épurée dans un gel, et le dosage de l'anesthésique local est efficace dans la zone douloureuse ou les zones immédiatement adjacentes, pour améliorer ou éliminer la douleur. Une concentration élevée d'anesthésique local en solution dans le support est utilisée pour entraîner une libération et une absorption rapide du médicament. Un soulagement est typiquement obtenu pendant une période de plusieurs heures.

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