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In clinical trials involving 1064 patients, 69% on Xenical plus diet lost 3% or more of initial body weight within 3 months, with a mean loss of 13 lbs. In clinical trials, the overall mean weight loss from randomization to the end of 1 year in the intent-to-treat population was 13.4 lbs in patients treated with Xenical plus diet versus 5.8 lbs in placebo-treated patients.
Weight loss was observed within 2 weeks of initiation of therapy.
Across all studies, up to 5 times as many patients on Xenical plus diet were able to maintain a weight loss of >10% of their body weight from randomization at year 2 versus those on placebo plus diet.
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