PROBIOTICS: Claims and reality. “So what health problems can probiotics really help? After gathering at a Yale workshop to review the available evidence, a panel of 12 experts concluded that there was strong evidence that several probiotic strains could reduce diarrhea, including that associated with antibiotic use. Several studies have also suggested that certain probiotics may be useful for irritable bowel syndrome, with the strongest recommendation for Bifidobacterium infantis 35624, the probiotic in the Procter & Gamble supplement Align.”