**vartis psoriasis drug maintains efficacy after 4 years ? study
 

**vartis psoriasis drug maintains efficacy after 4 years ? study
ZURICH, Oct 1 (Reuters) - **vartis's psoriasis drugCosentyx showed long-term efficacy in keeping patients' skinclear, the Swiss drugmaker said on Saturday, citing a study ithopes will ultimately help the company to win business fromrival medicines made by Amgen and Johnson & Johnson.http://feeds.feedburner.com/~ff/reut...?d=yIl2AUoC8zA http://feeds.feedburner.com/~ff/reut...8w:V_sGLiPBpWU http://feeds.feedburner.com/~ff/reut...8w:F7zBnMyn0Lo
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