From my research, there is a definite correlation between the dosage and severity of adverse reactions.

First of all, the most important factor is dosage PER DAY. Someone who takes 750mg/day of Levaquin for 1 week, is far more likely to suffer a more severe adverse reaction than someone who takes 250mg/day of Levaquin for 3 weeks. As the dosage per day increases, the danger of suffering a serious reaction exponentially rises.

There are many articles that demonstrate the toxicity and risks of quinolones. Nevertheless, many doctors still believe that quinolones are a perfectly safe antibiotic, and may even prescribe them as first-line treatments for minor infections.

Even if you seek medical help for your serious side effects, very few doctors will actually believe you. Next time you visit another doctor, it would be a good idea to let them have a look at these reports below.

Peripheral neuropathy, or damage to the peripheral nervous system is a listed side effect from fluoroquinolones such as Levaquin (levofloxacin) and Cipro (ciprofloxacin), to name a few. There are many reports of such damage becoming irreversible, and even worsening after treatment.

It's hard to imagine that an antibiotic can cause permanent damage and pain to anyone.