Could a fentanyl vaccine potentially save thousands of lives? A recent animal study published in the journal Pharmaceutics indicates that a fentanyl vaccine was able to block the drug from entering the brain of rats—thus making it a worthy candidate for human studies and eventually something available to the public that can save lives.
Researchers administered rats with three doses of the vaccine or immunization at three-week intervals, and another group of rats received a placebo. To determine if the drug was working, they tested the immunized rats’ pain responses by heating up their tails for up to 10 seconds
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