Zithromax (Azithromycin) is used to treat many different types of bacterial infections, such as bronchitis, pneumonia, tonsillitis, skin infections, ear infections, and sexually transmitted diseases.
It is a semi-synthetic macrolide antibiotic chemically related to erythromycin and clarithromycin (Biaxin). It is effective against a wide variety of bacteria organisms, such as Hemophilus influenzae, Streptococcus pneumoniae, Mycoplasma pneumoniae, Staphylococcus aureus, and mycobacterium avium, and many others. It is unusual in that it stays in the body for quite a while, allowing for once a day dosing and for shorter treatment courses for most infections.
Azithromycin, like all macrolide antibiotics, prevents bacteria from growing by interfering with their ability to make proteins. Due to the differences in the way proteins are made in bacteria and humans, the macrolide antibiotics do not interfere with humans' ability to make proteins.
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