Does the exact same stimulant dose affect sleep differently depending on what you ate that day?

There's a genuine basis for this, though it's more about how food affects absorption timing than a dramatic difference in the drug itself. Taking a stimulant with a high-fat meal, or on an empty stomach versus a full one, can shift how quickly the medication is absorbed and reaches peak levels, which in turn can shift when its effects, including any evening tail that might interfere with sleep, actually show up relative to when it was taken. If the change is persistent, distressing, or affecting daily functioning, contact your provider through the FasTreat portal rather than changing medication on your own. Related reading: https://www.fastreat.com/en/blogs/adhd-sleep-problems-insomnia-relief-tips References: https://www.caddra.ca/canadian-adhd-practice-guidelines/