Does the industry look down on people that take meds for ADHD?
Might depend on how stingy you are with your meds.

Seriously, just make sure to disclose this where and when requested and it shouldn't be a problem. I'm sure you won't be the first or the last with a similar situation.
Make sure you disclose if asked though, because depending on what meds you take for ADHD they will show up on a drug test as a controlled substance, and if your test comes back positive they'll start to check DEA Rx numbers, so you won't be able to pull a "poppy seed" muffin excuse, and the nondisclosure will come back to bite you.