Hi, hi, hi, pause for a moment.
If you take Adderall and its effects are completely undependable, try taking it on an empty stomach. Don’t eat for the two hours before nor the hour after; empty stomach.
I take extended release Adderall for parasomnias caused by Long-Covid (which basically translates to “My brain doesn’t sleep when I do, I'm exhausted during the day, and I feel physical pain in my dreams). I'm also an ADHDer and autistic, so when the Long-Covid acts up everything else does too.
I kept asking professionals about how to get my meds to work regularly and with some degree of dependability. None of the people I asked really knew, which meant I had to figure it out via trial and error and my own research. To save any others the hassle, we're running through the list of highlights:
If you have digestive problems, your gut's probably pretty acidic; Adderall cannot absorb in an acidic system so drink a ton of water, don't eat anything processed (breads, cheeses, etcetera), and preferably take the meds on an empty stomach.
Don't eat fruit nor vegetables around when you take your meds. Nearly everything has vitamin C (citric acid) in it.
Don't eat dairy products other than milk around when you take your meds; a kind of acid (normally from the stomach) is added to culture the milk into butter, cheese, and all else.
If you have a menstrual cycle, your hormones will effect absorption. Not much you can do there. It might not adsorb at all during blood week, it absorb ten times more strongly during ovulation, you might want to keep track of that sort of thing.
Caffeine can exacerbate the effects of Adderall, meaning that if it doesn’t absorb on a day when you really meed it to… you can consume something caffeinated to try and bring it up as needed. Not suggested but sometimes helpful.