Cipro saved my life.
My only side-effect is that it left me with not being able to eat anything heavy. I can only digest something like Soylent now, so happy that Soylent is a thing otherwise life would suck.
My Ibuprofen bypackage lists "severe intestinal bleeding, shock, cardiac arrest and coma" at the bottom "less than 1 in 10 million" (IIRC that was the category).
There is a youtube channel that details some of these mishaps and a recent episode detailed someone who took anti-depressants, which lead to being unable to sleep and that person taking sleep drugs in response. Which eventually cause her colon to explode because the drugs in conjunction stopped almost all stomach movement (She survived but her colon was removed due to extensive necrosis).
Medicine/Drugs is always a risk game. There is always a chance that a simple appendectomy goes sour and you die on the operating table. Or that a vaccination leads to a fatal infection at the puncture site. Usually medical professionals try to play it safe and the actual risk for any individual is very low or as low as it can safely be made.
If it goes sour, it can go sour really fast, which is why IMO it's important that you speak with a professional instead of self-medicating for anything beyond cough drops and headache pills atleast once to ask if you can safely take it (even if they disagree that taking is necessary), especially when you already take other medication.
Glad it saved your life, however I must say that's a pretty severe side effect.