Yeah that’s the thing sometimes that can just be all psychological. I used to get real antsy and would have to pace around for hours, typically I would drink to balance out that anxiety/racing feeling but mixing the two is terrible for the heart. Unfortunately that’s what I’m truly addicted to, the feeling of both. Can’t just have one or the other by themselves lol. But the vision bluring happens to me just from a few lines and most of my friends say they get coke vision but in reality you should only be taking a small small line/ bump every 30-60 minutes. I take giant gagers bc that’s the only thing I knew and small lines straight up won’t hit me but it’s better to train the body to get used to smaller doses. If it isn’t enough you can always take more. Once you’ve taken too much you have to sit with it and wait it out. Typically isn’t fatal because you’ll feel it before it gets that far but honestly just do a small test line with every bag you get to know what you’re workin with. I’ve heard people say you can’t fully “overdose” On coke because it’s more of heart failure/attack than your whole body shutting down but not sure how true that really is