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Naloxone, sold under the brand name Narcan among others, is an opioid antagonist, a medication used to reverse or reduce the effects of opioids. Naloxone is commonly used to restore breathing after an opioid overdose. Effects begin within two minutes when given intravenously, five minutes when injected into a muscle, and ten minutes as a nasal spray. Naloxone has also been said to have an onset of action of 3-7 minutes as an intranasal. Naloxone blocks the effects of opioids for 30 to 90 minutes.
Read the full article on Wikipedia“Naloxone is a lipophilic compound that acts as a non-selective and competitive opioid receptor antagonist. The pharmacologically active isomer of naloxone is (−)-naloxone. Naloxone's binding affinity is highest for the μ-opioid receptor (MOR), then the δ-opioid receptor (DOR), and lowest for the κ-opioid receptor (KOR); naloxone has negligible affinity for the nociceptin receptor.”
“1–1.5 h”
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