Yes they do make yellow
xanax "bars" If you can break it into 4 sections and it reads R039 on one side and nothing on the other...then yes. That is
Alprazolam (generic xanax) 2mg. How old is your boy? Xanax is not a drug to be taken with a grain of salt. Xanax is seriously addictive not to mention powerful. It has a half life of 4 hours so the tendency is to eat more and more of them. No to mention withdrawal from xanax cold turkey can be life threatening. (seizures, hallucinations, ect.) Good luck.
-Jim-