I was taking k PRN for about 1.5 months when I decided I needed it daily (doc was okay with this, of course). I took it for another 1.5 months before hitting tolerance. At the time, I just knew I was all of a sudden anxious and having trouble sleeping. The insomnia hit first and then the anxiety. I went online and discovered the scary truth of what had happened. I started taking k to stop panic attacks that were a result of being shocked by my implanted defibrillator seven times in a row one day while I was out walking at lunch. I came across someone threatening in a remote part of the place I was walking, ran to get to safety, and after feeling safe, I started getting shocked. Apparently my HR had gone over 250 bpm, and my device was programmed to shock that. I started having panic attacks the next week and after one that landed me in the ER, I was terrified and needed help. Unfortunately what helped was k, and I was given no warning by the doctor or the pharmacist. Because of the severe panic, I wasn't in my usual mind to do research and make sure it was safe, and I had people around me telling me it was fine and that they take it occasionally for anxiety.
I've been tapering since September 14 off .875 mg. I'm down to .362 mg today. The last three weeks have been insanely hard. I've had symptoms all the way down, but things seemed to be getting better back in January, before we all got COVID. It's been harder since, but incredibly hard since reaching .375 mg and beyond. I don't know why. I've been discouraged from the start that I can't go any faster after the amount of time I took it before tapering.