What the research says: “Good bacteria,” best known to help foster a healthy gut, may also help prevent respiratory track infections, according to a 2015 analysis.
Is it safe? The pills can sometimes cause bloating and gas and may lead to infections in people with seriously weakened immune systems.
CR’s take: Consuming yogurt and other probiotic-rich foods is fine, but there’s not enough evidence to justify taking probiotic pills to fight colds or flu.
Source: CR Consumer Reports magazine January 2018
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