Does drinking water reduce side effects after a COVID-19 shot?
Good hydration might help ward off COVID-19 infection. But the science is murky on exactly how and why drinking before an injection might alter your immune reaction.
ByEmily Sohn
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The advice comes from neighbors, magazine articles, clinic websites, even nurses: drink a lot of water before and after your COVID-19 vaccine to help ward off side-effects.
The problem: There is no evidence that drinking extra water can help ward off the sore arms, body aches, and fevers that some people experience after getting their COVID-19 vaccine shots.
Water-chugging also won’t reduce the chances of fainting for people who are prone to lightheadedness with needles.