Probiotics

As a first time mummy I have a few questions to ask and know about it. My baby is 3 months old and she had mild constipation and low stool issue a month ago. When consulted private pd she advised to change it to frisolac gold AR since I was using Frisolac Gold Stage 1. Instead of changing formula, anyone has tried probiotics? Would it help with constipation and colic? Will baby stool be normal and soft?