Hi jules yes I take Bio-K probiotic (50billion per day) and I do notice a big difference in my BM's if I stop taking it. I think it's something that you do have to take daily to properly colonize the colon with the beneficial bacteria. When I first started taking it I got alot of gas but that went away as my body adjusted to it. It took about
2 weeks for me to notice a difference but now it's well worth the $. Yes I have given it to my kids, especially when they are given antibiotics. The stuff I take comes in childrens flavours as well. I just give them 1/2 a container to drink as I take the full container. Good Luck