Pine bark, often derived from the French maritime pine tree (Pinus pinaster), is known for its potential health benefits due to its high content of antioxidants called proanthocyanidins. These antioxidants have been studied for their potential effects on various aspects of health, including cardiovascular health and inflammation, these  antioxidant properties can help reduce oxidative stress in the body. It also has vasodilatory effects, meaning it can improve blood flow, including to the genital area. Improved blood flow is often associated with enhanced sexual function.

Some studies have suggested that OPC pine bark extract can increase nitric oxide production, which is important for healthy blood circulation and can have positive effects on sexual function. Nitric oxide helps to relax and dilate blood vessels, allowing for increased blood flow to the genital region.

Additionally, other factors such as lifestyle, stress levels, hormonal balance, and overall health can significantly impact libido, and it’s important to consider these aspects as well.