Grape seeds are rich in antioxidants, including phenolic acids, anthocyanins, flavonoids and oligomeric proanthocyanidin complexes (OPCs). In fact, GSE is one of the best-known sources of proanthocyanidins.
Due to its high antioxidant content, GSE may help protect against oxidative stress, tissue damage and inflammation and prevent disease.
There’s strong evidence that grape seed extract is beneficial for a number of cardiovascular conditions. Grape seed extract may help with a type of poor circulation (chronic venous insufficiency) and high cholesterol. Grape seed extract also reduces swelling caused by injury and helps with eye disease related to diabetes.