If you have this side effect, the CDC says switch arms for your next shot

If you have this side effect, the CDC says switch arms for your next shot

While studies of their impact on the vaccine’s efficacy have so far been limited, experts at the University of California Irvine warn that “taking over-the-counter medications such as acetaminophen and ibuprofen before receiving a COVID vaccine may reduce its ability to work and blunt your immune response to the vaccine.”