I can’t exactly give 5 stars for the product itself, because the first and only dose caused my 4mo/old baby to vomit. However, their customer service was absolutely amazing! I was so impressed by the way they helped me afterwards- I would truly say they went above and beyond. It sounds like vomiting as a side effect is very rare, and due to the benefits of probiotics for babies, I would still completely recommend this product to anyone with a baby. I do wish it had worked out for us- c’est la vie.