Pharmacies that actually have ADHD meds in stock?

My doctor keeps switching my medications because I can’t get any of my medicine. I’ve tried three different medications and they either don’t work for me or I can’t get them. I usually take generic Concerta but haven’t been able to get it for months.

Do any of you have a pharmacy that has medication in stock? I would call around but I want to have some idea of where to call.

Someone help, I’m having a lot of difficulty functioning without medication. 🥲