MC4R and obesity disorder: Analogs for novel targets such as amylin, leptin, GLP-1 MC4R, oxyntomodulin, neuropeptide Y antagonists, cannabinoid type-1 receptor blockers, MetAP2 inhibitors, lipase inhibitors and anti-obesity vaccines are currently being studied and it is predicted that the combined use of two or more classes of drugs involving various pathways might be beneficial (8).