Why does ADHD medication feel super effective the first week, then less noticeable after that?

Mine was the recalibration thing, still genuinely helping months later, just doesn't feel as dramatically 'holy cow' as week one anymore because that became my new normal. Provider warned me about exactly this at my first follow-up actually.

couple things could be going on, and it's worth bringing to your provider rather than assuming either explanation on your own. tolerance is a real possibility with some stimulant medications over time, but genuine tolerance usually develops more gradually than a dramatic week-one-to-week-three drop, so a sharp change that fast is often something else. more common explanation: the first week or two often has a bit of a novelty/placebo-adjacent boost layered on top of the actual pharmacological effect, everything feels dramatic and new, which can make the initial effect feel bigger than what's sustainable as your baseline expectation resets. that's not the medication working less, it's your perception recalibrating to what's actually your new normal. another real possibility: your body is still adjusting in the first couple weeks, and what you're noticing now might actually be closer to the true steady-state effect, with the first week representing an unusually strong initial response that wasn't fully representative. either way, worth tracking specifically what feels different (are you still getting real functional benefit, just less dramatic, or has it genuinely stopped helping at all) and bringing that detail to your provider, since the actual fix depends on which one it actually is.