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If the peptide were made in the body, Szabo and his colleagues wrote, one would expect that over the course of decades, researchers would have identified the gene that encodes it, the cells that make it, the receptors that it interacts with, and the levels at which it occurs in the body

L-Arginine A systematic review of research studies suggests that L-arginine (along with L-citrulline) can result in greater sexual arousal and satisfaction for pre-, peri-, and postmenopausal women who have HSDD or a related concern

Revive If you are feeling tired and run down all the time, suffering from unexplained aches and pains and continually falling victim to colds and other infections, then you may have a vitamin B12 deficiency

True allergic reactions are rare