Effectiveness of probiotic supplementation in reducing halitosis among older adults: a randomized, double-blind, placebo-controlled crossover trial

A randomized, double-blind trial found that daily supplementation with the probiotic Lacticaseibacillus paracasei TISTR 2688 significantly reduced halitosis and improved oral health markers in older adults. The study observed consistent reductions in volatile sulfur compounds over a 14-day period.