, it was discovered that a standardized dose of grape-seed extract lowered blood pressure. Systolic blood pressure (the top number in a blood pressure reading) dropped 12 points, on average. Diastolic blood pressure (the bottom number in a blood pressure reading) dropped an average of 8 points. Click on the following article to read about it.
Polyphenol antioxidants found in grape naturally increase dilation (vasodilation), which increases blood flow and decreases blood pressure. Grape-seed extract is exactly what it sounds like--an extract produced from the seeds of grapes--with high levels of polyphenols, particularly one polyphenol known as proanthocyanidin. I use it to control the pain and inflammation for my father's arthritis. Consequently, he has no more pain. Amazing.
I take a grape-seed extract product called "Proflavanol 90" made by Usana Health Sciences. It is a pharmaceutical-grade (USP) grape-seed extract that is standardized to 95% OPC content. It is certified by the NSF and carries NSF's trusted Certified for Sport™ Mark. USANA also received Good Manufacturing Practices registration and certification in 2007 through NSF. Usana Health Sciences is the official health supplement supplier to the Sony Ericsson WTA Tour. Thousands of Olympic and Pro athletes also trust their health to Usana .