Cyproheptadine for dogs and cats
An antihistamine for itchy and allergic skin. It is also used as an appetite stimulant in cats and for some poisonings. [1]
Key facts
| Generic name | Cyproheptadine |
|---|---|
| Common brand names | Periactin |
| Used in | Dogs & Cats |
| Type | Allergy & itch |
| Prescription? | Prescription |
| Typical US price | Not listed (no reliable public source) |
What it's used for
An antihistamine for itchy and allergic skin. It is also used as an appetite stimulant in cats and for some poisonings. [1]
How it works
It blocks histamine and serotonin, which explains both its allergy and appetite effects. [1]
Side effects and cautions
Common side effects: Sleepiness, increased appetite, dry mouth, excitability in cats, vomiting and diarrhea. [1]
Use with care: Stop it two weeks before skin allergy testing. Use caution in older pets and pregnant or nursing pets. [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.
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.
Cyproheptadine FAQ
What is Cyproheptadine used for in dogs and cats?
An antihistamine for itchy and allergic skin. It is also used as an appetite stimulant in cats and for some poisonings.
What are the side effects of Cyproheptadine?
Sleepiness, increased appetite, dry mouth, excitability in cats, vomiting and diarrhea.
Does Cyproheptadine need a prescription?
Yes. It needs a prescription from a veterinarian.
How much Cyproheptadine 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.
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This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.