Co-crystal of (rac) tramadol hcl and celecoxib

摘要

The present invention relates to co-crystals of tramadol and co-crystal formers selected from NSAIDs/coxibs, 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 (rac) - tramadol. HcI - celecoxib (1:1).