2-Imino-4-methylpiperidine (acetate) is a potent NOS inhibitor [1] Nitric oxide (NO) is an endogenously produced inorganic free radical gas which has been implicated in endothelium-dependent vascular relaxation, cell-to-cell communication, and cytotoxicity associated with phagocytic cells. NO is synthesized by three isoforms of nitric oxide synthase (NOS): nNOS, eNOS and iNOS [1]. 2-Imino-4-methylpiperidine (acetate) is a 2-iminopiperidine class of NOS inhibitor. In the presence of a final L-arginine concentration of 30 µM, 2-Imino-4-methylpiperidine inhibited human iNOS, eNOS, and nNOS with IC50 values of 0.1, 1.1, and 0.2 µM, respectively [1]. In LPS-treated rats, 2-Imino-4-methylpiperidine (10 mg/kg, po) inhibited plasma nitrite levels
