What do Cochrane systematic reviews say about probiotics as preventive interventions?
Vinícius Lopes BragaLuana Pompeu Dos Santos RochaDaniel Damasceno BernardoCarolina de Oliveira Cruz LatorracaRachel RieraPublished in: Sao Paulo medical journal = Revista paulista de medicina (2018)
Despite the marketing and the benefits associated with probiotics, there is little scientific evidence supporting the use of probiotics. None of the reviews provided any high-quality evidence for prevention of illnesses through use of probiotics. More trials are needed to gain better knowledge of probiotics and to confirm when their use is beneficial and cost-effective.