How much probiotics are safe for me to give to my 11 month old daughter that weighs about 17lbs?

Better options. Probiotics are good bacteria but we have to remember that they are made in the lab. So for a little baby like this better options are diluted goat yogurt or kefir. If you use probiotics use the smallest amount diluted in water to make sure your baby has no reaction. It should be less than 1/10 th of a capsule a day.