What is amoxicillin, and what does it treat?
Amoxicillin is an antibiotic in the penicillin group. It is used to treat bacterial infections such as infections of the ear, sinuses, throat (including strep throat), lungs (like some types of bronchitis or pneumonia), urinary tract infections, skin infections, and dental infections—when the cause is bacterial and susceptible to amoxicillin.
What does potassium clavulanate do?
Potassium clavulanate (often written as clavulanate) is not an antibiotic by itself. It works by blocking bacterial enzymes (beta-lactamases) that can break down amoxicillin. This lets amoxicillin work better against bacteria that would otherwise be resistant.
What conditions are amoxicillin + potassium clavulanate (co-amoxiclav) used for?
Amoxicillin and potassium clavulanate are commonly used together for bacterial infections where resistance is more likely or where beta-lactamase–producing bacteria may be involved, including:
- Sinus infections (sinusitis)
- Ear infections (otitis media)
- Throat and tonsil infections (including cases where broader coverage is needed)
- Chest infections (such as pneumonia or acute bacterial exacerbations, depending on clinician assessment)
- Dental and gum infections (including abscesses)
- Skin and soft tissue infections (certain types)
- Urinary tract infections (in selected cases)
How do clinicians decide between amoxicillin alone vs the combination?
Combination therapy is typically chosen when clinicians suspect or know the bacteria may produce beta-lactamases, leading to resistance to amoxicillin alone. If resistance is less likely, amoxicillin alone may be enough.
What is it used for (and what it is not)?
These antibiotics treat bacterial infections, not viruses. They do not cure illnesses like the common cold or most cases of influenza, even though symptoms may feel similar.
Important safety note: why the exact “uses” depend on your prescription
The specific infection being treated, the dose, and how long you take the medicine depend on factors like the site and severity of infection, age, kidney function, allergy history (especially penicillin allergy), and local resistance patterns.
If you tell me the infection type (for example, sinus infection, tooth infection, UTI) and the dose on the label, I can explain the usual rationale for using amoxicillin/clavulanate for that situation.