Any high school in the U.S. that wants to carry an emergency opioid overdose reversal kit will now be able to get one free of charge, thanks to a new initiative announced Monday by the Clinton Foundation and the drug’s manufacturer. Adapt Pharma, manufacturers of a nasal-spray form of naloxone, also known as Narcan, has partnered with the Clinton Health Matters Initiative to further expand access to the life-saving drug, the two groups said at the final day of the Clinton Health Matters Initiative Activation Summit. Naloxone is nonaddictive, nontoxic and easy to administer, especially through nasal application. It reverses the effects of an opioid overdose by essentially blocking the opioid receptors that heroin and many prescription painkillers target. The U.S. Food and Drug Administ…