Cochrane Briefs

Antibiotics for Acute Laryngitis in Adults



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Am Fam Physician. 2005 Jul 1;72(01):76-77.

Clinical Question

Are antibiotics effective for the treatment of acute laryngitis in adults?

Evidence-Based Answer

Two small trials of antibiotic treatment in acute laryngitis do not support routine use of antibiotics in these patients. Most patients will feel better in five to seven days, and it is unlikely that they will experience a clinically important benefit from antibiotics.

Practice Pointers

Laryngitis is characterized by hoarseness accompanied by varying degrees of sore throat, congestion, and other symptoms of upper respiratory tract infection. Although it usually is a viral infection, bacteria such as Haemophilus influenzae, Chlamydia pneumoniae, Moraxella catarrhalis, and Streptococcus pneumoniae have been isolated from the respiratory tract of symptomatic patients. Whether the bacteria are the cause of infection and whether treatment with antibiotics improves symptoms is not clear. Nevertheless, many physicians routinely prescribe antibiotics for adults with laryngitis. Reveiz and colleagues reviewed the literature to assess the effectiveness of different antibiotics for the treatment of acute laryngitis in adults, and to report any associated adverse effects.

Despite an extensive review, only two relevant clinical trials were identified. They were conducted by the same group of Swedish researchers and were published in 1985 and 1993. In the first trial, penicillin V (800 mg) or placebo was given twice daily for five days to 100 adults with laryngitis. Symptoms reported by the patients and a blinded assessment of voice quality were recorded for up to six months. There was no significant difference found between antibiotic and placebo groups for any of the measured outcomes.

The second study compared erythromycin with placebo. The authors found a small benefit in voice after one week (number needed to treat = five) and an improvement in reported cough symptoms at two weeks in the treatment group. Adverse events were not reported.

The poor quality of the literature for such a common condition is similar to that for bronchitis and other upper respiratory tract infections. Even patients with purulent secretions usually have viral infections and do not benefit from antibiotics.1

Reveiz L, et al. Antibiotics for acute laryngitis in adults. Cochrane Database Syst Rev. 2005;(1):CD004783

REFERENCE

1. Snow V, Mottur-Pilson C, Gonzales R. Principles of appropriate antibiotic use for treatment of nonspecific upper respiratory tract infections in adults. Ann Intern Med. 2001;134:487–9.



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