Users could take it for up to two years, but most did not do so because they were able to incorporate exercise and healthy eating into their lifestyles. If these neurotransmitters are deficient, people may experience anxiety and cravings, which can lead to overeating. sibutramine online When taken as directed, patients were expected to see weight loss within that month. It is used in obese patients who cannot lose weight or effect lifestyle changes on their own.