Is Grape Seed Extract Safe or Toxic?

Is Grape Seed Extract Safe or Toxic?

You probably don’t give much thought to what might be inside the tiny seeds of a grape. Yet for wineries that process tons of grapes yearly, these seemingly inconsequential morsels have become the source of a whole new product — grape seed extract. By pressing the seeds and extracting nutrients from them, manufacturers create this extract, which is available for purchase at natural foods outlets.

Nutrient Content

Grape seeds are a rich source of powerful antioxidants called oligomeric proanthocyanidin complexes. Antioxidants help prevent cell damage by neutralizing unstable molecules called free radicals, which are believed to accelerate aging and increase the risk of cardiovascular disease. Grape seed extract also contains vitamin E, flavonoids, linoleic acid and resveratrol, an antioxidant that has gained notoriety as an anti-aging nutrient.

Safety Concerns

If you’re considering taking grape seed extract, you’ll be pleased that this supplement has not been associated with any serious side effects. According to, researchers in Japan, Nevada, New York and the U.K. have tested the extract and found no negative repercussions from its use. However, be advised that it is possible to develop an allergic reaction to just about any substance, and if you have allergy symptoms such as hives, respiratory difficulties or swelling after taking grape seed extract, you should see a doctor immediately.

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