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Forum Name: Clots & Anticoagulants

Question: grape seed extract cause clot in varicose veins


 sharon165 - Thu Jan 03, 2008 5:07 pm

I have had varicose veins since my teens. I am now 54. Also low blood pressure. Someone recommended grapeseed extract, as it seemed to work for them. After just 2 days, 2 tablets a day, I develped a painful blood clot in my leg. The area was red, warm, painful to the touch. The only other time this happened was when I tried vitamin k for heavy menstrual bleeding. Do you think the grapeseed extract caused this? Should I continue trying it? Thank you for your time.
 Dr. Chan Lowe - Mon Feb 18, 2008 11:18 pm

User avatar Hello Sharon165,

Grape seed extract has been shown to affect clotting, although most of the studies I could find on this show that it inhibits clotting rather than causing clots. The hard part about herbal supplements is that they are not regulated by the FDA so there is actually no guarantee that what you think is in the supplement actually is in it. Some studies have shown that some supplements claiming to be 100% of supplement X actually are only about 60% of X along with 40% of other things, including dangerous compounds.

So, the actual grape seed extract probably was unrelated to your developing the clots but I cannot say for sure that the supplement was not involved in the developing of these clots.

Best wishes.

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