@RightMeow So I am on my second week of ADHD medication - I'm taking Xaggatin XL (which is cheaper brand of Concerta XL, a stimulant). We're upping the dose a little every week and I've had to cut all caffeine and alcohol intake during the titration period (and probably going forwards)
For me, the first week didn't seem a lot to write home about, there was a little more 'can' in doing things, but still no way of directing my focus onto anything useful. This week has been a gear shift. I've managed to complete work tasks that have been on my plate for more than a year, with a laser-sharp focus that I've honestly not felt for a very long time. My partner and my mother both say I'm more engaged in conversations with them, and my physical fidgetiness has dropped massively. My mood has been up as well.
They last 12 hours and so I take them in the morning, with the intent that they will be fully out of my system by the time it's bedtime, and so far I've not had any sleep problems. In terms of side-effects I've had the following: minor headaches in the morning for the first 2-3 days of upping a dose, raised heart rate and blood pressure - these should go back down as your body gets used to it, but I'm still in the initial period - reduced appetite (leading to some minor weight loss). I've had a little nausea at times, though taking the meds with food helps massively, and I've noticed I can get a little irritable, more so than usual.
A little bit of a downside is that I find I get hyperfocused on everything at the moment, even things I don't necessarily want to, and breaking that can be a bit difficult, but it's going to be learning new habits.