unfortunately I did find some medical websites discussing rare side effects and drug interactions, like below. (Who knew you shouldn't consume caffeine with Cipro?? And how long are you supposed to wait? Darn, I believe I took today's Levaquin with my coffee!)
... Avoid giving to adolescents, pregnant or lactating women, those with known neurological problems. Drug interactions: Ciprofloxacin interacts with anti-asthmatic drug theophylline (also a component of caffeinated drinks) and can cause respiratory failure, seizures and cardiac arrest. Caffeinated drinks should be avoided. Patients should avoid taking ciprofloxacin with antacids.
Adverse reactions and side effects :
NOTE: all such reactions are rare.
Neurological side effects ranging from dizziness to tremors, hallucinations, psychosis and convulsions have been seen in small numbers of patients. As with many other antibiotics it can kill the healthy bacteria of the gut and give rise to a disorder called pseudomembranous colitis. It can also make users sunburn easily and can cause muscle or tendon inflammation or damage.