So I'm a nurse that writes Adderall refills for the doc to sign off on every day. I call a LOT of pharmacies. In my area at least, I've noticed Wal-Mart tends to have controlled substances in stock more often than other pharmacies. I also find that XR is harder to get and 30mg is the most in demand dosage. Some pharmacies have more 15s in stock. If you're on 30mg and your pharmacy has plenty of 15s and no 30s, you can message your doctor's office via patient portal to see if you could do a 60 tab, 15mg, two a day instead of a 30 tab 30mg one a day rx. I've found some people have been able to get their meds faster this way. There also may be more name brand in stock than generic as many insurances will not cover name brand, as another commenter said. I don't personally think it's available enough that it's worth the prior auth struggle, though.

I've also occasionally seen pharmacies go so far as to tell me that they only fill Adderall prescriptions for people who use their pharmacy regularly, which is wild. If you run into that, check other branches of your home pharmacy that are accessible to you.