Our son clearly became colic at 3 weeks which then became the hardest days ever with the screaming/crying and gas pains around the clock. I started to research what we could do and live probiotics came up so I gave it a try starting at 5 weeks. His gas/tummy issues are practically gone after a week and his colic is soooo much better. He’s such a good baby when he’s awake now and such a pleasure. He was born via c-section and I had antibiotics for group B strep - so I’m very happy we found this. Only note is he became constipated when we started them, but that’s only because poop became more solid. Once he passed it though it hasn’t been a problem since.