I'm ADD, non hyperactive. However, I'm 17 and not quite graduated from high school, so I may not fall under the "adult" that you requested.

I've found that, for the most part, my medication really helps me. I've been taking 54 mg of Concerta every morning for the past... four years? Five? I'm not exactly sure, but 54 mg on time release keeps me going most of the day. I can't sleep in, though, or else I have a choice between going a day without the meds (meaning I have to keep myself pretty actively entertained or fall into a slump where putting two thoughts together is like trying to grip a handful of sand) or taking the meds and having them keep me up until the wee hours of the next morning. The former option is definitely no walk in the park, but I prefer it over the positive feedback loop that results from the latter choice (stay up late from the meds, sleep in later the next day, take the meds later, and stay up even later that night, etc.). The forgetfulness is still a bit of a problem even on the meds, but nowhere NEAR what it is unmedicated. I have to avoid long stretches of idle time or else I seem to fall into a mental slump even with the medication, and warm rooms, which can make anyone feel lethargic, have a tendency to also put me into the aforementioned slump.

But enough about me, what about you? (by the way, if you're more comfortable with private messaging, feel free, I'm fine either way)