The present invention relates to co-crystals of tramadol and co-crystal formers selected from NSAIDs, processes for preparation of the same and their uses as medicaments or in pharmaceutical formulations, more particularly for the treatment of pain. In a preferred embodiment, the co-crystal is a co-crystal of (-) -tramadol and (S) -naproxen (1:2); (+) -tramadol and (R) -naproxen (1:2) or (rac) -tramadol-Hcl-celecoxib (1:1).
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Page/Page column 21
(2010/04/30)
A crystalline form of (R,R)-tramadol-(S)-naproxene salt
The present invention concerns a (R,R)-tramadol-(S)-naproxene salt, a crystalline form of (R,R)-tramadol-(S)-naproxene salt, as well as their process for preparation and their uses as medicaments, more particularly for the treatment of pain.
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Page/Page column 6
(2009/03/07)
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