Lorcaserin, a selective serotonin 2C receptor agonist, helps patients both lose weight and maintain their weight loss, according to a phase III study conducted by the drug’s manufacturer and published in the New England Journal of Medicine.
Some 3200 overweight or obese adults were randomized to take lorcaserin or placebo twice daily for a year, after which lorcaserin recipients continued the drug or switched to placebo for another year. All participants also received nutrition and exercise counseling.
At 1 year, more patients in the lorcaserin group than placebo group had lost at least 5% of their body weight (48% vs. 20% of patients; mean weight loss: 5.8 kg vs. 2.2 kg). In addition, lorcaserin patients who stayed on the drug for a second year were more likely to maintain their weight loss than those who switched to placebo.
Serious adverse events did not differ between lorcaserin and placebo recipients. Unlike some other serotonergic agents, lorcaserin did not increase risk for valvular heart disease.
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