# Amoxicillin/Clavulanate for Fish (Fish Clav)

> Adding clavulanate to amoxicillin protects the antibiotic from enzymes (beta-lactamases) that some bacteria produce to defeat it. This widens the range of bacteria the drug can reach. A broader spectrum than amoxicillin alone, covering many beta-lactamase-producing gram-positive and gram-negative bacteria.

Source: https://petremedyusa.com/medications/amoxicillin-clavulanate-for-fish/ · PetRemedyUSA

## Commonly used for

- Infections that have not responded to plain amoxicillin
- Stubborn fin rot and ulcers
- Mixed bacterial infections

## Things to know

- Like other penicillin-class drugs it is ineffective against parasites and fungi.
- People with penicillin allergies should wear gloves when handling.
- Use a hospital tank so the main tank biofilter is not disturbed.

## Products

- [Fish Clav 875/125mg 30-Tablets](https://petremedyusa.com/products/fish-clav-875-125mg-30-tablets/): from $63.99

## Frequently asked questions

### What does clavulanate add to amoxicillin?

Clavulanate does not kill bacteria on its own. It blocks the enzyme that many resistant bacteria use to destroy amoxicillin, so the amoxicillin can still work.

### When would someone choose Fish Clav over Fish Mox?

Keepers typically consider it when a bacterial infection has not improved on plain amoxicillin, or when they suspect a resistant strain.