Augmentin vs Zithromax: side-by-side comparison
Augmentin (Amoxicillin, Clavulanate) and Zithromax (Azithromycin) both belong to the Antibiotics class. They share clinical context but use different active ingredients. The choice between them depends on mechanism nuances, side-effect profile and individual response.
| Property | Augmentin | Zithromax |
|---|---|---|
| Active ingredient | Amoxicillin, Clavulanate | Azithromycin |
| Manufacturer | GlaxoSmithKline | Pfizer |
| Class | Antibiotics | Antibiotics |
| Strengths | 500/125mg, 875/125mg, 1000/62.5mg | 250mg, 500mg, 600mg |
| Forms | tablet, extended-release tablet, oral suspension, chewable tablet | tablet, oral suspension, extended-release suspension |
What's the same
Augmentin and Zithromax both belong to the Antibiotics class and are used for partially overlapping indications. The active ingredients — Amoxicillin, Clavulanate vs Azithromycin — share the same therapeutic approach, so many safety and management points carry across both.
Key differences
Meaningful differences are in active ingredient (Amoxicillin, Clavulanate vs Azithromycin), strengths (500/125mg, 875/125mg, 1000/62.5mg vs 250mg, 500mg, 600mg), forms (tablet, extended-release tablet, oral suspension, chewable tablet vs tablet, oral suspension, extended-release suspension), and the mechanism, half-life and side-effect nuances that distinguish members of the class.
Mechanism and action
Augmentin: Amoxicillin inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), but is hydrolysed by beta-lactamase enzymes produced by some resistant bacteria. Zithromax: Azithromycin binds to the 50S ribosomal subunit of bacteria, inhibiting protein synthesis.
When Augmentin is preferred
Augmentin is approved in adults and children for the treatment of respiratory tract infections including acute otitis media, sinusitis, community-acquired pneumonia and acute exacerbations of chronic bronchitis, urinary tract infections, dental infections, skin and soft tissue in…
When Zithromax is preferred
Zithromax is approved in adults and children for the treatment of community-acquired pneumonia, acute exacerbations of chronic bronchitis, sinusitis, pharyngitis caused by Streptococcus pyogenes, otitis media, urethritis and cervicitis caused by Chlamydia trachomatis or Neisseria…
Frequently asked questions
Is Augmentin or Zithromax better? ▾
There is no single answer. Augmentin and Zithromax both belong to the Antibiotics class but differ in mechanism nuances, half-life and side-effect profile. Preference depends on the patient, the prescriber and prior response to other therapies.
Can I switch from Augmentin to Zithromax? ▾
Switching within the Antibiotics class is done under supervision, typically using equivalent doses and a follow-up period to confirm response and tolerance. It is not a self-directed decision.
Do Augmentin and Zithromax have the same side effects? ▾
They share many of the Antibiotics class side effects, with differences from mechanism and dose. Each medication's prescribing information lists specifics.
More Augmentin comparisons
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.