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Sinus Infection? Antibiotics No Help

Antibiotics, Steroid Spray No Help for Adult Sinus Infections
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WebMD Health News
Reviewed by Louise Chang, MD

Dec. 4, 2007 -- Neither antibiotics nor steroid sprays offer much help to adults with sinus infections, a British study shows.

One of the most common complications of the common cold or flu is a sinus infection. The symptoms: a stuffy nose; a thick, dark-colored nasal discharge; and head pain.

You've very likely had such an infection. And if, like 25 million other Americans, you went to a U.S. doctor, there's a 90% chance you got a prescription for antibiotics.

You very likely had some side effects from that antibiotic. But it's extremely unlikely the antibiotics you took were much help, according to a study by Ian G. Williamson, MD, senior lecturer at the University of Southampton, England.

"We are confident that if there is an effect of antibiotics on acute sinus infections, it is not very big -- certainly not as big as people have been led to believe," Williamson tells WebMD.

Williamson and colleagues studied 240 patients ages 16 and older whose symptoms suggested that they had a sinus infection caused by bacteria. Viruses also cause sinus infections, but antibiotics do not help viral infections.

Study patients received antibiotic treatment with amoxicillin, an antibiotic often used for bacterial sinus infections, with or without nasal steroid sprays. A fourth of the patients received no treatment at all, but just got inactive placebo pills and placebo sprays.

Ten days later, patients who got no active treatment were just as likely to be cured as those treated with antibiotics. Steroid nasal sprays made little difference, although they seemed to help people with very mild nasal congestion and seemed to make things a little worse for those with very intense nasal congestion.

Williamson says the study does not definitively rule out some small effect of antibiotics. But that effect would be very small.

"Over a three-week illness -- when your symptoms are not so bad -- would the side effects from a long course of antibiotics be worth a day's less illness? Overall we think antibiotics have a pretty small effect, if there is one there at all," Williamson says.

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