When I was in high school I didn't notice that many differences when I took medication. There was only one that I can remember made me feel weird... And it was a really extreme medication that I shouldn't have been on. I felt like I had no legs and was floating through the hallways at school in a sense... Some people would pay for that lol.
Anyway, now that I am in my mid-twenties and have been seeking treatment for... eh... a year and a half now, on and off, I think every single medication I've taken has given me some side effects initially (As well as coming off). Even the "natural" route gave me the most vivid nightmare (It had Valerian Root and some other herbs) to date (The dream
themselves weren't very scary, but I kept waking up within a dream within a dream and so on and so forth, to the point that I questioned reality the whole next day which spun me into a panic attack).
With the Prozac (Fluoxetine, really) I had sexual dysfunction and nausea. I felt stoned at times and dizzy. One time there was a fight going on down the road that I could hear from my room (Second story) and I walked outside and called the cops. I remember feeling like I was slurring my words (I wasn't, I think I just felt slow) and such. But that passed.
With the Strattera I took... Oh man, those were the worst side effects. But then again, not every medication works or the cons outweigh the pros (Which it did in this case).
Now with the Wellbutrin I had initial side effects that were scary, such as heart palpitations and chest pressure. The pressure comes and goes with the anxiety, but those palpitations are gone. I still have some insomnia, though. But it is only a few weeks in.
All in all, what I've learned is that these medications send you through Hell before you see the light. Weather the storm and you'll see the calm thereafter (When you find the right medication). Does it suck? Well, yeah. But it is better than sitting around and doing nothing while you suffer. One thing that helped me immensely was, and is, Xanax. I try not to take it unless needed, but in the early days when my anxiety was paralyzing it helped me get through a lot of tough times. Just don't drive on it until you know how it affects you. I can drive on it fine, but I also take a very, very small dose (Half of a .25mg).
Best of luck.