Amoxicillin/clavulanic acid (INN) or co-amoxiclav (BAN) is an antibiotic useful for the treatment of a number of bacterial infections. It is a combination antibiotic consisting of amoxicillin trihydrate, a β-lactam antibiotic, and potassium clavulanate, a β-lactamase inhibitor. This combination results in an antibiotic with an increased spectrum of action and restored efficacy against amoxicillin-resistant bacteria that produce β-lactamase.
Side effects include an increased risk of yeast infections and diarrhea.[1]

Starting at
| Amoxicillin | Penicillin antibiotic |
| Clavulanic acid | Beta-lactamase inhibitor |
| Trade names | Augmentin, Clavamox, Tyclav, other |
| AHFS/Drugs.com | monograph |
| MedlinePlus | a685024 |
| Licence data | US FDA:link |
| Pregnancy category |
AU: B1 |
| Legal status |
AU: S4 (Prescription only) |
| Routes of administration |
oral, intravenous |
| CAS Number | 74469-00-4 |
| ATC code | J01CR02 |
| PubChem | CID: 6435923 |
| ChemSpider | 4940608 |
| ChEMBL | CHEMBL1697738 |