Her decision. She's been reading stuff on the Internet that says ADHD might be fake and over medicated. :-) Her main real issue is the appetite suppression, which she hates.
Her mom and I can see the difference on/off, it isn't subtle. We aren't pushing. I'm committed to her success, but meds are just one tool. I expect she'll go back on them at some point, once she's exhausted her youthful political correctness.
May I ask why you opted to take her off the meds after seeing such a huge benefit from them?