I take my levothyroxin first thing after waking fifteen minutes later have a small breakfast (usually ham or spam and egg wrap) and fifteen minutes later take my Concerta 54 er, probably no help because it’s not amphetamine based like yours, but I have had no issues after about five years now.
Had a rough time when I stared the thyroid meds, it took my body awhile to get used to the levothyroxin, I’d have night sweats so bad I literally had to change the bedding, I was in pretty bad shape, my doctor was shocked by my labs, she’d never seen anyone with levels so far out of wack that wasn’t in a coma.
If you’re having issues use WebMds interaction checker or talk with your doctor.