Grape Seed Extract and Blood Pressure, Latest Findings

2013-10-22 07:03

In previous studies, grape seed extract in capsules was shown to be an effective natural alternative for lowering blood pressure. Now new research results are adding to that war chest, but how well did grape seed extract perform? Well enough to make you consider using it?

New grape seed extract study

The extract used in this study was added to beverages and not tested as capsules. In a 10-week, randomized, double-blind trial, 28 men and women with prehypertension (120-139 mmHg systolic and 80-89 mmHg diastolic) were given either 300 mg grape seed extract in two 40-calorie beverages each day for six weeks (12 participants) or a placebo (16 participants).

According to Britt Burton-Freeman, PhD, one of the study’s authors and director of the Center for Nutrition Research at the Illinois Institute of Technology Institute of Food Safety and Health, in a NutraIngredients-USA report:

  • Overall, systolic blood pressure declined 7 mmHg and diastolic dropped 3.8 mmHg after six weeks of taking grape seed extract
  • Blood pressure rose after ten weeks when participants had stopped taking the extract
  • In a subset of individuals with a systolic blood pressure of 125 mmHg or greater, the decline in systolic pressure was 13.6 mmHg
  • In a subset of individuals with a diastolic blood pressure of 83.5 mmHg or greater, the decline in diastolic pressure was 5.8 mmHg

The important messages from this study are that the “higher starting systolic or diastolic blood pressure group got the greatest benefit,” noted Burton-Freeman, and that even those with a milder prehypertension state saw improvements.


In an earlier placebo-controlled, double-blind study involving adults with prehypertension, 300 mg of grape seed extract in capsules taken for 8 weeks resulted in a decline in systolic and diastolic blood pressures of 8 mmHg and 5 mmHg, respectively. Individuals in the placebo group showed no improvements.

Grape Seed Extract, 6 Reasons To Take It


Subscribe to EmaxHealth on YouTube


Grapeseed extract has kept me out of the hospital with asthma and chronic bronchitis since 1994. I started taking it hoping that it would help with joint pain and it not only helped with that, it has eliminated my asthma symptoms, reduced my allergies and is protecting my heart. It is my number one go to supplement.