Absorption
Lorcaserin is absorbed from the gastrointestinal tract with peak plasma concentration occurring 1.5 - 2 hours
after oral dosing. The absolute bioavailability of lorcaserin has not been determined. Lorcaserin has a plasma
half life of ~11 hours; steady state is reached within 3 days after twice daily dosing, and accumulation is
estimated to be approximately 70%.
Effect of Food. Twelve adult volunteers (6 men and 6 women) were given a single 10 mg oral dose of BELVIQ
in a fasted state and after administration of a high fat (approximately 50% of total caloric content of the meal)
and high-calorie (approximately 800–1000 calories) meal. The Cmax increased approximately 9% and exposure
(AUC) increased approximately 5% under fed conditions. Tmax was delayed approximately 1 hour in the fed
state. BELVIQ can be administered with or without food.