Trigonellamide (1-Methylnicotinamide) is a metabolite of nicotinamide and is produced primarily in the liver by nicotinamide N-methyltransferase. Trigonellamide may be an endogenous activator of prostacyclin (PGI2) production and thus may regulate thrombotic as well as inflammatory processes in the cardiovascular system. The mechanisms of action of Trigonellamide involve the activation of PGI2 release driven by cyclooxygenase 2 (COX-2). PGI2 releasing capacity of 1- Trigonellamide was shown to afford not only anti-thrombotic but also fibrinolytic, anti-inflammatory and gastroprotective effects. Interestingly, Trigonellamide did not directly either affect the activity of leucocytes or release PGI2 in the perfused rat hindquarters model. Still, Trigonellamide, due to its PGI2 releasing capacity, might serve as a hepatoprotective agent that protects against Concanavalin-A induced liver injury through the downregulation of interleukin-4 (IL-4) and tumor necrosis factor-α signalization (TNF-α). In addition to its anti-platelet, anti-thrombotic and anti-inflammatory activities, 1-MNA has also been shown to restore endothelial function in diabetic hyperglycemic rats, as well as to improve endothelial function in humans. PGI2 displays anti-metastatic activity, and the PGI2 releasing activity of Trigonellamide, the potential application of exogenous Trigonellamide to prevent metastatic cancer.