Report How long has your child been on antibiotics? in PANS / PANDAS (Lyme included) Posted October 28, 2011 Sorry to keep asking, just trying to decide on whether to start daily antibiotics. If anyone does not mind answering how long has your child been on antibiotics? Do you use probiotics and what kind? Also, have you had any problems? If we start her doctor wants to test every 3 months to check her system (I think liver??) Do most doctors do this? Also, most importantly, since starting has your child gotten sick or do you find your child has still gotten sick anyways?