As of January 2023, TruBiotics Vegetarian capsules are milk free and contain prebiotic fructooligosaccharide (FOS) 150 mg (0.15 g). FOS can cause gas, bloating, and abdominal discomfort. These effects may be temporary and are usually mild if the dose is less than 10 grams daily.  Should you have any concerns regarding your personal use of probiotics, such as TruBiotics, we encourage you to speak with your physician as only he or she is in the best position to advise you.