This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pharmacology
All of the following agents are used in obesity except: 
Select and explain. 
A. Orlistat, B. Sibutramine, C. Olestra, D. Neuropeptide Y analogues
D: Neuropeptide Y analogues
Answer: D: Neuropeptide Y analogues 
Explanation: Ans. (D) Neuropeptide Y analogues(Ref: KDT 6th/e p130-131)Drugs used for the treatment of obesity are:FenfluramineDexfenfluramineSibutramine (serotonin and NA reuptake inhibitor)Orlistat (Pancreatic lipase inhibitor)Sucrose polyester (olestra)Neuropeptide Y antagonistsb3 agonists