NATURAL FACTORS Acidophilus & Bifidus Double Strength 10 Billion (180caps)The human intestinal tract contains trillions of beneficial or good bacteria that provide a multitude of health benefits, including keeping bad bacteria at bay. In fact, our gut is home to 80% of our immune system, which relies on a thriving community of good bacteria to keep us healthy. But certain circumstances can disrupt this natural but delicate balance, such as taking antibiotics, travelling, or being under high or prolonged stress. Enter