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The Effect of Too Much Ginkgo

by
author image Allison Adams
Allison Adams has worked as a registered dietitian since 1996. She began writing professionally in 2000, with work featured in a variety of medical publications such as "Women's Health Magazine" and the "New England Journal of Medicine." Adams holds a Master of Science in nutrition and food sciences from the University of Wisconsin-Madison.
The Effect of Too Much Ginkgo
Woman holding up a ginkgo leaf. Photo Credit XiXinXing/XiXinXing/Getty Images

Ginkgo, also known as gingko biloba, is an herbal supplement sometimes used for medicinal purposes. The use of ginkgo dates back thousands of years, and many studies have analyzed the health benefits and risks of using this herbal supplement. Although ginkgo is generally considered a safe herbal supplement, you may experience side effects after consuming ginkgo, especially if taken in large quantities.

Bleeding

According to a study published in "Neurology" by Frank Gilliam and David Wennberg, ginkgo can cause internal bleeding, especially if taken in combination with other drugs. This herbal supplement can also act as an anti-coagulant, which means that it may prevent your blood from clotting. Therefore, you should exercise caution when taking ginkgo to prevent bruise formation or bleeding. Gastrointestinal bleeding may also occur after taking too much ginkgo. Therefore, stop using ginkgo at least 36 hours prior to any kind of surgery or dental procedure.

Changes in Insulin Levels

If you are a diabetic who uses medications to improve your insulin level, you should avoid taking ginkgo. According to the Mayo Clinic, ginkgo can cause the insulin level in your blood to decrease. Ginkgo can, therefore, counteract drugs designed to increase insulin levels and may cause your diabetic medications to lose their effectiveness.

Allergic Reaction

Some people may develop allergies to ginkgo. Ginkgo supplements contain ginkgolic acid, a toxin that may provoke an allergic reaction in some individuals. To help minimize the possibility of an allergy to ginkgo, always buy your ginkgo tablets or capsules from a pharmaceutically reputable company. Additionally, if you are already allergic to poison ivy, cashew nuts or mango rinds, you have an increased chance of developing an allergy to ginkgo. Skin blisters are the most frequently observed allergic reaction to ginkgo.

Distress

Ginkgo can stimulate your mind, but many people prone to hyperactivity, impulsiveness or anxiety find the effects of ginkgo too strong. You may develop feelings of restlessness and agitation after taking too much ginkgo. Gastrointestinal distress is another possible side effect of taking this herbal supplement. Typically, this distress manifests as an upset and gassy stomach, nausea or diarrhea. If you experience any adverse side effects after taking ginkgo supplements, immediately discontinue use and seek medical attention.

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