Grapeseed extract has many benefits and is used to treat a variety of conditions, such as varicose veins and diabetes complications, according to WebMD. Grapeseed extract is thought to help with poor circulation, high cholesterol and reduce swelling. It is also high in anti-oxidants, which protect cells from damage and disease.
As of 2015, research is being done to find out if grapeseed extract helps reduce the risk of many different types of cancer, as well as many other conditions such as premenstrual syndrome and wound healing, according to WebMD. The results of this research are not yet conclusive. Grapeseed extract is thought to reduce the risk of eye disease, and evidence suggests that it is beneficial for a variety of cardiovascular issues as well, such as chronic venous insufficiency.
There is not a specific amount of grapeseed extract that is supposed to be taken daily, according to WebMD. In Europe, the normal dose is 100 to 300 milligrams, which is prescribed and used in studies, but the highest amount that may be taken safely is not currently known, as of 2015. Some people who have a bleeding disorder or high blood pressure are urged to speak with their doctor before using grapeseed extract.