In diverticulosis, the intestinal lining weakens, forming pouches that bulge outward. Symptoms can include constipation, diarrhea and abdominal pain. In one study, 45 men and women with diverticulosis, average age 63, took 10 mL of Lactobacilli acidophilus (providing 37.5 million CFU) and bifidobacterium (providing 1.48 billion CFU) three times per day. Symptoms subsided during the study, and after six months, 68 percent of participants were still completely symptom free, with 78 percent of all participants saying probiotics were effective, or very effective, in reducing symptoms compared to the beginning of the study.