Early this past summer, I developed prostatitis and was prescribed a 38 day course of ciprofloxacin, a flouroquinalone. I was reticent about taking it after reading the warnings that came with my prescription, especially about the potential for long-term muscle/joint/tendon damage, peripheral neuropathy (had a bout of idiopathic PN once and never want to have it again!), and heart arrhythmia problems (which I have a history of). My doctor convinced me to take the cipro, advising that the odds of having the nastier side effects were low and said that I didn't have any better choices for my condition. So, deciding that the risk wasn't worse than not being able to urinate properly, against my better judgement, I started my regimen. Due to developing moderate joint/muscle pain, and the prostatitis clearing up, I quit the course about 3/4 of the way through it. This was back in July. I've had problems with heart flutter and joint pain since. I am 66 and have a history of arthritis and the heart flutter, so these symptoms may just be coincidences.