06/24/2026
Every year we get the question about brewer's yeast as a antiparasiticide
Active and inactive brewer's yeast, when given as a dietary supplement to dogs at the rate of 14 g/day, failed to repel or kill fleas. Twenty dogs in each of 3 groups were inoculated weekly for 7 weeks with 100 unfed cat fleas (Ctenocephalides felis). One group served as a control while one group re...