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Old 06-24-2011, 12:16 PM
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It has a similar antimicrobial spectrum as erythromycin, but is more effective against certain Gram-negative bacteria, in particular, Haemophilus influenzae. Azithromycin resistance has been described5 and is endemic in many areas. It is notably ineffective against MRSA.citation needed
Azithromycin is an azalide, a subclass of macrolide antibiotics. Azithromycin is one of the world's best-selling antibiotics,marketed in the United States under the name Zithromax, and under a variety of brand names and generic labels worldwide. It is derived from erythromycin; however, it differs in chemical structure from erythromycin in that a methyl-substituted nitrogen atom is incorporated into the lactone ring, thus making the lactone ring 15-membered. no prescription where zithromax . Azithromycin is used to treat or prevent certain bacterial infections, most often those causing middle ear infections, strep throat, pneumonia, typhoid, and sinusitis. In recent years, it has been used primarily to prevent bacterial infections in infants and those with weaker immune systems. It is effective also against certain sexually transmitted infections, such as non-gonococcal urethritis, chlamydia, gonorrhea, and cervicitis. Recent studies have indicated it also to be effective against late-onset asthma, but these findings are controversial and not widely accepted.23
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