IANAD !!!
Zithromax may protect you from pneumonia, strep, and plenty more.
But what will protect you from Levaquin (Levofloxacin)?
The fluoroquinolone drugs, of which levofloxacin is one, are a class of industrial-strength and profoundly dangerous antibiotics. Adverse effects can include long-term tendon damage and permanent peripheral and CNS nerve damage.
Excerpt from the Wikipedia article on levofloxacin:
[QUOTE=Wikipedia article: Levofloxacin]
The serious adverse effects that may occur as a result of levofloxacin therapy include irreversible peripheral neuropathy,[52][62] spontaneous tendon rupture and tendonitis,[8][9][63][64][65] QTc prolongation/torsades de pointes,[8] toxic epidermal necrolysis (TEN)[8] and Stevens-Johnson syndrome, erythema multiforme,[66] severe central nervous system disorders (CNS), including seizures[67][68] and clostridium difficile associated disease (CDAD: Pseudomembranous colitis)[69][70][71][72] photosensitivity/phototoxicity reactions,[66][73] fatal hypoglycemia,[74] kidney damage,[75] rhabdomyolysis (muscle wasting),[56][57][58] as well as anaphylactoid reactions[76][77] and myasthenia crisis.[78]
Additional serious adverse reactions include acute pancreatitis,[79][80] temporary as well as permanent loss of vision, irreversible double vision,[81] impaired color vision, exanthema, abdominal pain, malaise, drug fever,[82] dysaesthesia and eosinophilia. Pseudotumor cerebri, commonly known as idiopathic intracranial hypertension (IIH), (also referred to as increased intracranial pressure),[83] has been reported to occur as a serious adverse reaction to levofloxacin. Another serious adverse effect is autoimmune hemolytic anemia.[84]
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Stephen Fried, an investigative journalist, wrote a book about this after his wife suffered permanent brain damage after a single dose. (The medication he mentions is Floxin, which I think is ofloxacin, the racemic version of levofloxacin.) See his web site for this book and in particular the full first chapter of the book, on-line. You should definitely want to read this before taking any drug in this class.
(The implication would be, if you’re going to have problems like this, you’d know it by now – in which case, you definitely DON’T want to read this!)
I suspect (but can’t prove) that this also happened to my father about a year-and-a-half before he passed away, when he was hospitalized and given intravenous ciprofloxacin (I suspect) for septicemia. He became seriously demented rather quickly during that hospital stay, from which he never recovered. I don’t have access to his medical records to find out any more detail than that. (Of course, I have no idea what other recourse the doctors might have had, when a patient has septicemia.)