Rimonabant is the generic version of Acomplia. It is The new weight loss medication breakthrough from Sanofi-Aventis, exceeding Phentermine in it’s ability to help you lose the weight! It is a CB1 cannabinoid receptor antagonist ,and Its main avenue of effect is reduction in appetite. Rimonabant acts by obstructing the receptors, which control the food intake and energy expenditure - Thus resulting in reduced appetite. Rimonabant also has an added characteristic effect as a smoking cessation aid.