FTM Probiotic for LO

Has anyone ever used this probiotic before? I want to give it to my LO but I'm a FT mom and scared to give it to her. Her pediatrician is useless and we are getting a new one. She doesn't recommend probiotics at all but she's very old school and by the book. Please no judgment I'm exhausted and just looking for something to calm my fussy gassy baby. P.s. I already use gas drops