Acetyl-(D-Arg10,Cys11,D-Phe14,Cys17)-β-MSH (10-17) amide is a cyclic octapeptide with MC4R agonism. Acetyl-(D-Arg10,Cys11,D-Phe14,Cys17)-β-MSH (10-17) amide significantly increases heart rate and blood pressure.