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| | Patent 5,998,480 |
 | | Nimesulide has demonstrated as having a better therapeutical ratio, less gastrolesivity and, in general, better tolerability with respect to other nonsteroidal anti-inflammatories such as for example, arylalkaloid acids such as acetylsalicylic acid, Ketoprofen, Diclofenac, Naproxen, thanks to the presence of a sulfanilide group in its molecule. |
 | | Since nimesulide, a weak acid from the chemical viewpoint, is scarcely absorbed at low pH values (for example in the gastric tract), a possible initial step is salification with alkaline or alkaline-earth bases. |
 | | In the preparation according to this invention, nimesulide can be present in dispersed form, the phospholipid can be a phosphatidyl acid ester, phosphatidylcholine in particular, and the acid can be an organic or an inorganic acid, preferably chosen from the group that comprises lactic acid, salicylic acid, glycolic acid, citric acid, aqueous hydrochloric acid. |
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