Bio tonics premium maca 400mg Food Supplement Maca Extract for Improving Sexual Function and Fertility 40veg.caps The product maca 40caps can be called the natural enhancer of sexual life. The beneficial effects of maca on sexual function and fertility can be explained by the high concentration of proteins and vital nutrients. Dried maca root contains about 10% protein – mainly in the form of amino acids. Amino acids are essential for many functions in our bodies, including sexual function and fertility. They are needed to build neurotransmitters like dopamine and noradrenaline, which play a significant role in the state of sexual arousal and physical performance during sexual activity. Histidine is also found in maca root. This amino acid plays an important role in sexual function.