I looked at a lot of different options before settling on Nexabiotic powder. Our son was 4 weeks old and was experiencing considerable upset with his stomach. His bowel movements were painful, and he had extended periods of uncontrollable crying episodes. We have been using this product for nearly 2 weeks now, and the results have been dramatic. He tends to only fuss consistently in the evening now, the rest of the day he seems to be very comfortable and happy. His stool has improved considerably also. We attribute the results directly to the use of this wonderful product. It is very easy to open a capsule and mix in with an ounce of breast milk, which he readily consumes. Very glad with the results. Will definitely buy again.