Augmentin Dosing for Sinus Infection

First-Line Treatment Approach

The American College of Physicians recommends amoxicillin as the first-line antibiotic for uncomplicated sinusitis in adults 1, 2
For patients who fail to improve after 3-5 days of amoxicillin therapy, switching to Augmentin (amoxicillin-clavulanate) is recommended 1

The standard adult dose of Augmentin is 875/125 mg twice daily for 10-14 days, as recommended by the Infectious Diseases Society of America 1, 3
For suspected resistant organisms or treatment failure, a high-dose regimen of 90 mg/kg amoxicillin component (not to exceed 2 g every 12 hours) is recommended 1

The standard treatment course is 10-14 days, as recommended by the American Academy of Otolaryngology 1, 3, 2
Treatment should continue until the patient has been symptom-free for 7 days 1, 2

Augmentin should be used in scenarios such as moderate to severe illness, recent antibiotic use, treatment failure with amoxicillin, areas with high prevalence of β-lactamase-producing H. influenzae, and regions with high incidence of antibiotic resistance 1, 3

Evaluate response after 72 hours of treatment, and if no improvement or worsening, consider switching to an alternative antibiotic or reevaluating the diagnosis 3
Patients with a partial response should continue antibiotics for the full course 1

Treating viral sinusitis with antibiotics is inappropriate and contributes to antibiotic resistance, as stated by the Centers for Disease Control and Prevention 3, 2
Not completing the full course of antibiotics can lead to incomplete eradication and potential relapse 3

For patients allergic to or intolerant of amoxicillin-clavulanate, alternatives include cephalosporins (if no history of anaphylaxis to penicillin), doxycycline, and respiratory fluoroquinolones (for severe cases or treatment failures) 1, 3

Some studies suggest that nasal corticosteroids may be beneficial when added to antibiotic therapy for symptom relief in post-viral sinusitis, according to the European Rhinologic Society 4

The European Respiratory Society-supported data shows that Augmentin 875/125 mg twice daily for 14 days demonstrated faster symptom improvement at days 3-5 compared to cefuroxime (81% vs 56%, P=0.014) and significantly lower clinical relapse rates at weeks 2-4 (0% vs 8%, P=0.005) in patients with chronic rhinosinusitis 5

The American Academy of Otolaryngology-Head and Neck Surgery recommends prescribing amoxicillin-clavulanate 875 mg/125 mg twice daily for 5-10 days for adults with acute bacterial sinusitis and normal renal function, which provides 90-92% predicted clinical efficacy against major pathogens 6
The Infectious Diseases Society of America recommends treating for 5-10 days, with most guidelines recommending continuation until symptom-free for 7 days (typically 10-14 days total) 6

The American Academy of Otolaryngology-Head and Neck Surgery suggests escalating to high-dose amoxicillin-clavulanate 2000 mg/125 mg twice daily if the patient has recent antibiotic use within the past 4-6 weeks, age >65 years, moderate-to-severe symptoms, comorbid conditions or immunocompromised state, or high local prevalence of drug-resistant S. pneumoniae 6, 7
The American Academy of Otolaryngology-Head and Neck Surgery recommends adding intranasal corticosteroids to all patients to reduce mucosal inflammation and improve symptom resolution 6

The American Academy of Otolaryngology-Head and Neck Surgery recommends reassessing at 3-5 days and switching to second-line therapy if no improvement or worsening symptoms, and reassessing at 7 days to reconfirm the diagnosis, exclude complications, and consider switching antibiotics or obtaining imaging 6
The American Academy of Otolaryngology-Head and Neck Surgery advises against prescribing antibiotics for symptoms lasting <10 days unless severe features are present, as most acute rhinosinusitis is viral and resolves spontaneously within 7-10 days without antibiotics 6