“Drug traffickers are driving addiction and increasing their profits by mixing fentanyl with other illicit drugs.The immunized animals could produce anti-fentanyl antibodies that stop the drug’s effects, allowing it to exit out of the body via the kidneys.This blocks the “high” caused by fentanyl, and it would theoretically make it easier for people to quit using the drug or avoid a relapse.“Right now, this is just at the rat study level, but I think it holds some promise.”The scientists found their vaccine did not cause adverse side effects in the rats.I specifically buy fentanyl.’ The numbers are increasing, and it’s a very large percentage.”Current treatments for opioid use disorder include methadone and buprenorphine, which both activate brain receptors associated with opioids, and the medication naltrexone, which blocks the effects of opioids."