Allergy & itch Dogs & Cats

Cyclosporine (Atopica) for dogs and cats

Treats atopic dermatitis (skin allergies) in dogs and cats, plus other immune-related conditions. [1]

Last reviewed: October 2026 · 2 sources · see sources

Quick answerCyclosporine (cyclosporine (oral)) is a prescription medicine for dogs and cats. It adjusts the immune cells involved in an allergic reaction, which lowers itch and inflammation. It can take a few weeks to reach full effect. The most common side effects: vomiting, diarrhea and lower appetite are the most common.

Key facts

Generic nameCyclosporine (oral)
Common brand namesAtopica, Atopica for Cats
Used inDogs & Cats
TypeAllergy & itch
Prescription?Prescription
Typical US priceNot listed (no reliable public source)

What it's used for

Treats atopic dermatitis (skin allergies) in dogs and cats, plus other immune-related conditions. [1]

How it works

It adjusts the immune cells involved in an allergic reaction, which lowers itch and inflammation. It can take a few weeks to reach full effect. [1]

Side effects and cautions

Common side effects: Vomiting, diarrhea and lower appetite are the most common. Rarely, more infections or cancers. [1]

Use with care: Not for pets with a history of cancer, pets that are breeding, pregnant or nursing, or pets under six months old. Your vet may want bloodwork during long-term use. [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.

Cyclosporine FAQ

What is Cyclosporine used for in dogs and cats?

Treats atopic dermatitis (skin allergies) in dogs and cats, plus other immune-related conditions.

What are the side effects of Cyclosporine?

Vomiting, diarrhea and lower appetite are the most common. Rarely, more infections or cancers.

Does Cyclosporine need a prescription?

Yes. It needs a prescription from a veterinarian.

How much Cyclosporine 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 – Cyclosporine (oral) (veterinary drug handout)
  2. FDA – Frequently asked questions about animal drugs