Since Culturelle™ IBS Complete Support makes real changes in your gut microbiome, it is not unusual to experience some mild side effects when you start taking it. Research shows that over 96% of people who participated in our clinical study found the HMOs contained in Culturelle™ IBS Complete Support to be tolerable. The most common temporary side effects were mild gastrointestinal (GI) symptoms such as abdominal pain, gas, and bloating. These are perfectly normal and actually an indication that your microbiome is beginning to improve. These sensations tend to disappear without any intervention after a few days, though for some people it may take slightly longer for their system to settle. While it might feel a little unpleasant during these first days, know that these are signs that your microbiome is changing to help you reclaim control of your digestive health, so it’s worth sticking with it. If you are still experiencing these symptoms after the first few weeks but they are manageable, it is perfectly safe to continue with the products. Your gut will find a new balance by itself within the first month or two. If, however, you experience any more serious side effects, such as nausea or increased IBS symptoms, you should stop taking the product and seek advice from your doctor.