Lactobacillus delbrueckii bulgaricus is a probiotic bacterium native to yogurt and fermented dairy. It breaks down lactose and supports a balanced gut flora.
People use it to ease lactose digestion, maintain immune function, and promote regular bowel movements. You can get it from live-culture yogurt or as a supplement in capsules or powders. Taking it with a meal helps the bacteria survive stomach acid.
Those with weakened immune systems or on immunosuppressants should consult a healthcare professional before use. Some notice mild bloating or gas during the first few days.