Acidophilus assists in the digestion of proteins, a process in which lactic acid, hydrogen peroxide, enzymes, natural antibiotic substances that inhibit pathogenic organisms, and B vitamins are produced.  Acidophilus also has an antibacterial effect and may help detoxify harmful substances.   

According to the Colon Health Handbook, the healthy colon should contain at least 85% lactobacillus and 15% coliform bacteria. However, the typical colon bacteria count is in reverse, resulting in excessive gas, bloating, intestinal and systemic toxicity, constipation, and mal-absorption of nutrients which leads to an overgrowth of Candida. Other factors that contribute to Candidiasis are recurrent use of antibiotics, oral contraceptives, aspirin, corticosteroids, poor diet, sugar, yeast, and stress. These cause an imbalance of the "friendly bacteria" The good flora bind with some of the unwanted substances, causing them to be excreted.

Yeast infections of the vaginal tract respond very favorably to Lactobacillus and Bifidophilus. the lactobacillus bifidus microorganisms destroy the pathogenic organisms. L. bifidus also helps establish a healthy intestinal environment. It improves bowel function by aiding peristalsis and results in the production of a softer, smoother stool. Harmful bacteria are kept in check, and waste toxins that have accumulated in the intestines are destroyed.