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The U.S. Food and Drug Administration has approved TachoSil, a patch that's used to stop bleeding during heart surgery, and can be absorbed by the body. The protein-coated patch is made from horse tendons and can be used when traditional surgical procedures can’t stop mild-to-moderate bleeding.

The proteins on the patch, which are collected from plasma donors, help blood clot. The patch eventually breaks down within four to six months and is not intended to be used inside blood vessels, according to the FDA.

TachoSil is manufactured by the privately held Swiss pharmaceutical company Nycomed. It will be marketed and distributed in the U.S. by Baxter International, Inc.

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