Nitric oxide, which the body creates from L-Arginine and other amino acids, is essential for regulating blood vessel diameter and, by extension, blood circulation.

Pycnogenol includes elements that stimulate body enzymes required for nitric oxide synthesis from L-Arginine. Additionally, Pycnogenol includes potent antioxidants that may contribute to the maintenance of healthy blood vessels by guarding against harmful free radicals that the body continuously produces.

The combination of these two compounds may support blood flow to the the genital area  and maintain healthy blood vessels, both of which are essential for the body's sexual response, the ability to sustain erections, and ultimate sexual pleasure.