Do people with untreated ADHD tend to have a harder time managing a GLP-1 medication's routine (injection schedule, meal timing) than people without ADHD?

This is a reasonable, commonly discussed concern rather than a formally studied outcome. Routine-based medical tasks (remembering a weekly injection day, adjusting meal timing and content around reduced appetite) can be genuinely harder for anyone with executive function challenges, which is a core feature of ADHD. Some people manage this with reminders, apps, or linking the injection to another consistent weekly habit, similar to strategies used for other ADHD-related routine challenges. References: https://obesitycanada.ca/healthcare-professionals/adult-clinical-practice-guideline/

Set a recurring phone alarm specifically for my injection day because I know myself well enough to not trust remembering it otherwise. Works well so far.