CLINICAL TRIAL
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
RESEARCH SUPPORT, NON-U.S. GOV'T
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The effect of orlistat on body weight and coronary heart disease risk profile in obese patients: the Swedish Multimorbidity Study.

OBJECTIVE: To assess the effect of orlistat on body weight and cardiovascular risk amongst obese patients at high coronary risk.

DESIGN: After screening, patients entered a two-week single-blind placebo lead-in period, during which they followed a mildly hypocaloric diet, before being randomized to double-blind treatment with either orlistat 120 mg or placebo three times daily, in conjunction with dietary intervention for 1 years.

SETTING: The study was conducted at 33 primary care centres in Sweden.

SUBJECTS: A total of 382 obese adults (body mass index 28-38 kg m-2) with type 2 diabetes, hypercholesterolaemia and/or hypertension were recruited, of whom 376 were randomized to orlistat (n = 190) or placebo (n = 186).

MAIN OUTCOME MEASURES: Change in body weight, waist and hip circumferences, blood pressure, serum lipid profile, fasting glucose and HbA1c.

RESULTS: After 1 years, mean weight loss was significantly greater with orlistat compared with placebo (5.9% vs. 4.6%; P < 0.05). Moreover, significantly more orlistat-treated patients than placebo recipients maintained weight loss of > or = 5% (54.2% vs. 40.9%; P < 0.001). Orlistat was also associated with significantly greater improvements than placebo in total serum cholesterol (- 3.3% vs. -0.5%; P < 0.05), LDL-cholesterol (- 7.0% vs. -1.1%; P < 0.05), fasting glucose (5.1% vs. -0.1%; P < 0.01) and HbA1c (- 2.7% vs. -0.5%; P < 0.05). Similar results were reported for the subgroup of patients with type 2 diabetes. Orlistat was well tolerated.

CONCLUSIONS: Treatment with orlistat in conjunction with diet promotes significantly greater weight loss and cardiovascular risk factor reduction than diet alone amongst obese patients at high risk of future coronary events.

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