I remember this poem!! I remember it well because I had just stopped my meds that I was put on, for all the reasons that this poem describes.
The topic of side effects is so deep here, and so ironic, because the medication is supposed to make you feel more better, and help you get through each day, but sometimes it makes every day harder and you feel less alive on them, and often more ill.
I think you really described it well here, using really short and choppy lines which worked amazingly to show all the different ways you felt.
I think your last line especially was powerful, because it shows your intention of going on meds, you wanted them to make you better and feel more like everyone else around you seems to feel. This makes it quite a touching ending, to know you wanted something, but the opposite happened.
I am glad you reposted this, as I am glad I stumbled on it again!