azithromycin or zithromax. Dosage
I don't normally dispense medical opinions on boards or in person, and this post is to be considered nothing but a simple layman's warning, but given the potential for someone to read this old post with the dosage given, one short statement.
Do NOT take a single or daily dosage of 2000 mg (two thousand milligrams) of azithromycin prior to consulting your physician. The usual treatment regimen is a single initial day dosage of 500mg with 250mg daily for 4-5 days following. There ARE a few treatment courses that do call for either a single 1g (1000mg) or 2g (2000mg) dosage followed by subsequent lower dosage regimen, but without being an infectious disease specialist the only two that I'm aware of are for treatment of haem d (chancroid) or genital ulcer disease, and progressive urethritis or cervicitis. The side effects are also progressive in the 1%+ category for the 1g and 2g single dosage treatments - typically GI stress (vomit, diarrhea) or abdominal pain related, but potentially also includes serious angiodema.
Azithromycin (or any macrolide subclass of antibiotics) will NOT "clear up most bacterial based infections". To date, there is no real single wonder drug antibiotic that counters as a single treatment course "most bacterial based infections".
Azithromycin acts as a blocking agent to bind with certain bacteria microorganisms and interfere with their ability to synthesize protein, specifically most useful in clinical trials against phagocytes and fibroblasts.
Azithromycin is mainly useful against GP aerobes of staph and strep, and GN aerobes of haem. D (e. G. Chancroid) haem I, morax, and gonorrhea.
In terms of STDs which is the topic here, what you're really talking about is treating against or preventing contraction of staph or strep due to kissing or oral contact, genital gonorrhea, penile chlamydia, and a few mycoplasma based illnesses.
If anyone does choose to follow a non-physician ordered treatment of 2000mg dosage (which again I'd say is just plain stupid) just for the sake of preventative awareness, be self aware of side effect conditions especially that feels like, seems like, or tingles like a skin rash or hives (uritcaria) If so, I wouldn't bother waiting, immediately rush yourself to a hosptical or call for an ambulance - worst case is you're wrong, but best case is you just saved yourself from an angiodema reaction and eventual respiratory distress from the over dosage of azithromycin or zithromax.