(EN) The present invention relates to co-crystals and pharmaceutically acceptable salts of 8-chloro-N-(4-(trifluoromethoxy)phenyl)quinolin-2-amine, pharmaceutical compositions comprising them as well as their use as medicines and more particularly for use in the prevention and/or treatment of inflammatory diseases, diseases caused by viruses and/or cancer or dysplasia. The present invention also concerns methods for the preparation of said co-crystals and said pharmaceutically acceptable salts.