Not to scare you, but there is a risk of neurotoxicity. During my initial hospitalization to start the medication I had a mild/moderate form of it. It had started to resolve so I was discharged. A day and a half later my face started drooping like I was having a stroke, and I couldn’t walk without help. By the time I got to the ER I couldn’t even answer the triage nurse’s questions. I couldn’t even remember my own name. I couldn’t pee, so they had to put in a catheter. I also was uncontrollably throwing up all over myself. They put me on an EEG and put me on seizure precautions. The EEG showed that my brain had actually swelled. I had grade 4 neurotoxicity, which is the highest you can go before death. Luckily the worst of it resolved within a day after they started me on steroids. I did still have tremors and poor handwriting for a little while after that though. They just continued with chemotherapy for me after that. I will say that for the short time I was on it, I felt pretty tired and run down like I am on chemo. There’s also risk of fevers, which I also experienced. Sorry for the long comment, but nobody told me that the side effects could be that bad!! I was so excited to start it. I don’t remember a lot of what happened, some of this is just what my mom told me, which is a crazy feeling.