A dentist's injection typically causes numbness for several hours. This experience could soon be history. Now, Clifford Woolf, professor at Harvard Medical School and the Massachusetts General Hospital, Boston, USA, and his colleagues have developed a combination of two agents which is able to specifically block pain without producing numbness or motor paralysis. The substance is composed of a normally inactive derivative of the local anesthetic lidocaine, called QX314, and capsaicin, the pain-producing substance in chili peppers.
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©iStockphoto/Angel Rodriguez
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Scientists have developed a combination of two agents which is able to specifically block pain without producing numbness or motor paralysis. It includes an ingredient from chili peppers.
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