The antibiotic that's sold as Zithromax, Zmax or sometimes referred to as a "Z-Pack" is prescribed to treat bacterial infections such as bronchitis, pneumonia, or ear infections. The FDA is warning the public that the pills can cause abnormal changes in the heart's electrical activity that may lead to a fatal heart rhythm. Patients with known risk factors such as existing QT interval prolongation, low blood levels of potassium or magnesium, a slower than normal heart rate, or those who use certain drugs to treat abnormal heart rhythms, or arrhythmias face the greatest risk. "Health care professionals should consider the risk of fatal heart rhythms with azithromycin when considering treatment options for patients who are already at risk for cardiovascular events," the FDA said in its March 12th update. The new guidance was prompted by a May 2012 study and another study by the antibiotic's manufacturer, Pfizer, that looked at risks to electrical activity of the heart in azithromycin-takers. Last May, a New England Journal of Medicine study paid for by the National Heart, Lung and Blood Institute found there would be 47 extra heart-related deaths per one million course of treatment with five days of Zithromax, as compared to 10 days of amoxicillin and other antibiotics. The risks of cardiovascular death associated with levofloxacin (Levaquin) treatment were similar to those associated with azithromycin treatment, according to the FDA. "People need to recognize that the overall risk is low," Dr. To continue reading The Pharma Letter please login, subscribe or claim a 7 day free trial subscription and access exclusive features, interviews, round-ups and commentary from the sharpest minds in the pharmaceutical and biotechnology space. Can you buy retin a in europe Buy hydrochlorothiazide 50 mg Sophia viagra Jan 14, 2015. Azithromycin Warnings. Azithromycin can cause abnormal changes in the electrical activity of the heart, which may lead to deadly irregular. Health Canada has issued information concerning the use of azithromycin. Learn about Zithromax Azithromycin may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. It's widely used to treat chest infections such as pneumonia, infections of the nose and throat such as sinus infection (sinusitis), skin infections, Lyme disease, and some sexually transmitted infections. Azithromycin is used in children, often to treat ear infections or chest infections. It can also be used long term to prevent chest infections in people who keep getting them. The medicine is available on prescription as capsules, tablets and a liquid that you drink. It can also be given by injection, but this is usually only done in hospital. Azithromycin is usually taken once a day, unless you're having it by injection. Try to take your medicine at the same time each day. re like many people across the country, you would have been prescribed a course of azithromycin at some stage ? that is, an antibiotic commonly referred to as Z-Pak, Zmax, or Zithromax. However, while the drug has been given to millions of patients over the years, there are numerous risks that have been associated with the medication that consumers need to know about. Azithromycin, marketed under a variety of different brand names, is a broad-spectrum, semisynthetic antibiotic that belongs to a group of antibiotics called macrolides. It was released in the early 1990s and is one of the most frequently-used antibiotics in the United States (and is very popular in many other nations). In 2011, for instance, more than 40 million people in the U. received an outpatient prescription for the medication. The drug is used to treat a number of conditions, but particularly bacterial ones. It is commonly prescribed to treat respiratory, ear, throat, and other infections such as tonsillitis, pharyngitis, acute bacterial sinusitis, community-acquired pneumonia, cervicitis, urinary tract infections (UTIs), acute bacterial exacerbations of chronic obstructive pulmonary disease, genital ulcer disease, sexually transmitted diseases, and uncomplicated skin and soft tissue infections. Azithromycin warnings AZITHROMYCIN 250/500 MG - ORAL Zithromax side effects, medical., Apo-Azithromycin - Uses, Side Effects, Interactions - Clonidine tabletCialis used forLevitra and low blood pressureAmoxicillin while nursingSildenafil 20 mg tablet reviews Find patient medical information for Azithromycin Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Azithromycin Oral Uses, Side Effects, Interactions, Pictures - WebMD. Zithromax Azithromycin Side Effects, Interactions, Warning. - RxList. Azithromycin Side Effects, Dosage, Uses, and More - Healthline. Zithromax Azithromycin belongs to the family of medications known as macrolide antibiotics. Are there any other precautions or warnings for this medication? Dec 5, 2017. In March 2013, the US Food and Drug Administration issued a warning about potential cardiac problems with the antibiotic azithromycin. RxList 5/8/2018. Zithromax Z-PAK azithromycin is a semi-synthetic macrolide antibiotic used for treating. see WARNINGS AND PRECAUTIONS. Nervous.