Ginkgo biloba has been used effectively to boost memory for a long time, but new research indicates its extract may also be effective against a common type of pain that is difficult to treat.

Researchers from the Catholic University of Seoul, South Korea, tested the compound on rats to evaluate its effectiveness against neuropathic pain which is often associated with herpes zoster, limb injury or diabetes.

They found that in response to cold and pressure stimuli, pain responses were significantly reduced in ginkgo-treated rats, compared to those which received a placebo. Moreover, there was a positive correlation between the dose strength of ginkgo extract and the pain-relieving effect.

Pain was reduced for at least two hours after ginkgo treatment, the researchers also established.

“It is reassuring to know that scientists are investigating the properties of this ancient oriental herbal medication in an effort to determine what chemical constituents account for the many beneficial effects traditionally ascribed to it,” says Dr. Steven L. Shafer of Columbia University and editor-in-chief of Anesthesia & Analgesia where the study was published.

Those who would like to take advantage of the benefits of ginkgo biloba may turn to nutritional supplements.