I started at 40mg some years ago; I did indeed feel superhuman, but my sleep suffered periodically and I had some other side effects – morning nausea sometimes, especially when combined with coffee.
I found ways to cope: reduce coffee intake, have some plain yogurt in the morning, as the protein seems to help buffer the stomach, medicate early in the morning (6:30am) and exercise hard after work to promote better sleep. Still, it was a drag, and too easy to miss a beat in my routine.
I had to quit taking Strattera for two years while attempting to become a pilot, but it turns out the FAA hates ADHD kids and once that fell through, I resumed at a much lower dosage of 25mg. While I don’t feel quite as capable at the lower dose, the side effects are significantly more mild and I generally don’t notice them. I still make sure to medicate no later than 7am, as a precaution, but there’s no correlation between being medicated and having poor sleep.
TL;DR stick with it for a few days and don’t hesitate to ask for a lower dose if you can’t hack it. The drug does a world of good for me, and it promotes habits that persist even when I go unmedicated for awhile (e.g. on weekends and often while on vacation).
At university, I medicated heavily with “the hard stuff” - stimulant medications. These took a heavy toll on my body; I had nervous tics and twitches galore. The meds gave me enough focus to develop good study habits and after 2-3 years I ceased them.
Once I joined the workforce, I focused on doing things that I was passionate about. For me, ADHD doesn’t always mean lack of focus; I can hyper focus when I’m motivated by something. Having a job that I liked to do turned me into a low grade workaholic (too much hyper focus!) but I became successful in my career.
For the past few years, I’ve been medicating with a non stimulant that I tolerate very well. I still do what I love, at work, and Strattera helps me stay focused on doing the things that are most important to my employer and myself, but my days of being a workaholic are over.
If you are like me, then doing what you love is essential, and finding the right medication is a big help, though not strictly essential.