Stomach & digestion Dogs & Cats

Tylosin for dogs and cats

An antibiotic used mainly for diarrhea and gut inflammation. [1]

Last reviewed: October 2026 · 2 sources · see sources

Quick answerTylosin is a prescription medicine for dogs and cats. A macrolide antibiotic related to erythromycin. The most common side effects: mild stomach upset and, with the injection, soreness at the site.

Key facts

Generic nameTylosin
Common brand namesTylan
Used inDogs & Cats
TypeStomach & digestion
Prescription?Prescription
Typical US priceNot listed (no reliable public source)

What it's used for

An antibiotic used mainly for diarrhea and gut inflammation. [1]

How it works

A macrolide antibiotic related to erythromycin. [1]

Side effects and cautions

Common side effects: Mild stomach upset and, with the injection, soreness at the site. [1]

Use with care: The powder tastes bitter, so it is often hidden in food or put in capsules. [1]

Call your vet right away if your pet has trouble breathing, facial swelling, hives, collapse, or any side effect that is severe or getting worse.

About dosingDosing is your vet's call. We don't list doses because the right amount depends on your pet's weight, age, health and other medicines. Don't change a dose or stop a medicine without asking your vet, and never give a pet medicine meant for people unless your vet tells you to [2].

What it costs

We don't list a price for this one because we couldn't find a reliable public source. Ask your vet or pharmacy for a quote; prices depend on your pet's size, the dose and where you fill it.

Tylosin FAQ

What is Tylosin used for in dogs and cats?

An antibiotic used mainly for diarrhea and gut inflammation.

What are the side effects of Tylosin?

Mild stomach upset and, with the injection, soreness at the site.

Does Tylosin need a prescription?

Yes. It needs a prescription from a veterinarian.

How much Tylosin should I give my pet?

Only your veterinarian can tell you. The right dose depends on your pet's weight, health and other medicines, so we don't list doses. Never give a pet a medicine prescribed for a person or another animal without asking your vet.

Related medications

Related cost guides

This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.

Sources (2) — tap to show
  1. VCA Animal Hospitals – Tylosin (veterinary drug handout)
  2. FDA – Frequently asked questions about animal drugs