There are a couple robust discussions on generic Adderall you’ll find helpful: https://www.additudemag.com/forums/topic/generic-adderall-xr-impax-vs-teva/ and https://www.additudemag.com/forums/topic/adderall-name-brand-vs-generic/
Penny
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism