Lactobacillus acidophillus or L. acidophillus is a common probiotic that is present in fermented foods and yogurt. It helps the digestive system in breaking down sugar. L. acidophillus has a number of essential health benefits. It helps in reducing cholesterol, alleviating diarrhoea, treating irritable bowel syndrome (IBS), promoting weight loss, preventing cold & flu, and reducing eczema. It is also known to help promote gut and vaginal health.