Zithromax / azithromycin)

Manufacturer: Pfizer

Zithromax has been reported to be capable of allowing the following very serious diseases to appear in users:

Pfizer site:

Post-Marketing Experience:
Adverse events reported with azithromycin during the post-marketing period in adult and/or pediatric patients for which a causal relationship may not be established include:

Allergic: Arthralgia, edema, urticaria and angioedema.

Cardiovascular: Arrhythmias including ventricular tachycardia and hypotension. There have been rare reports of QT prolongation and torsades de pointes.

Gastrointestinal: Anorexia, constipation, dyspepsia, flatulence, vomiting/diarrhea rarely resulting in dehydration, pseudomembranous colitis, pancreatitis, oral candidiasis and rare reports of tongue discoloration.

General: Asthenia, paresthesia, fatigue, malaise and anaphylaxis (rarely fatal)

Genitourinary: Interstitial nephritis and acute renal failure and vaginitis.

Hematopoietic: Thrombocytopenia.

Liver/Biliary: Abnormal liver function including hepatitis and cholestatic jaundice, as well as rare cases of hepatic necrosis and hepatic failure, some of which have resulted in death.

Nervous System: Convulsions, dizziness/vertigo, headache, somnolence, hyperactivity, nervousness, agitation and syncope.

Psychiatric: Aggressive reaction and anxiety.

Skin/Appendages: Pruritus, rarely serious skin reactions including erythema multiforme, Stevens Johnson Syndrome and toxic epidermal necrolysis.

Special Senses: Hearing disturbances including hearing loss, deafness and/or tinnitus and rare reports of taste perversion.

Source: Paul D. Rheingold, Esq. & Physician’s Desk Reference (PDR), 53rd-55th editions, 1999-2002

Free legal Zithromax consultation

Zithromax-A Chronology Focusing on Labeling
November 1998-First marketed
May 1999-WARNINGS section,

Entrez PubMed articles

Stevens-Johnson syndrome as an unusual adverse effect of azithromycin

Zithromax Safety News Articles

Proper diagnosis of adverse drug reactions

Proper diagnosis of adverse drug reactions, although often complicated and difficult, is important for the patient and the physician. Often the question of whether it is safe to re-administer a medication is an important clinical judgment that needs to be made. Alternative medications may be less effective or have greater toxicities or cost, or both. Areas of ongoing research to improve diagnostic precision for allergic drug reactions include further understanding of the immunochemistry of allergenic medications, improvement of the reproducibility and sensitivity of relevant in vitro assays, and further validation of computer-assisted evaluation of adverse drug events. The positive and negative predictive values for these diagnostic tests need to be better defined whenever possible. At present, the primary diagnostic tool for properly assessing immunologic drug reactions remains a meticulous and detailed history obtained by an astute, knowledgeable, and motivated physician

If you or a loved-one is taking Zithromax, and have suffered SJS or TEN, or other serious injuries, you may be entitled to compensation for your injuries.

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