Overall, PEA is thought to promote feelings of well-being and contentment. It has been used to improve concentration, serve as an appetite suppressant and enhance mood. Because of its ability to increase alertness, however, it does have the potential to briefly increase blood pressure and blood glucose levels. It should be noted that the immediate effects of PEA HCL has a very short lifespan (lasting about 15 minutes), and this must be taken into account when supplementing.