Phentermine, which has been prescribed as an appetite suppressant to control obesity and acts as an agonist to the human TAAR1 (Trace Amine Associate Receptor 1) [30], displayed an MIC of 375.00 μM and was not tested further due to the high concentrations required for inhibitory activity. Here, TAAR1 is linked to obesity due to melanocortin 4 receptor deficiency.