GO Healthy GO Probiotic 40 Billion is designed to maintain and restore good gut bacteria. Antibiotic medication, the contraceptive pill, alcohol and stress can create an imbalance of good and bad microflora in the intestinal tract which can lead to ill health. <br /> <br /> Often overlooked is the importance of having high levels of good bacteria in the gut, as is essential for maintaining a healthy immune system and all round good health. The stomach and digestive system plays a very important part in the immune system and is often thought of as the first line of defence.&nbsp;