Ergoline derivative that antagonizes serotonin (5-HT2) receptors and inhibits prolactin secretion from the anterior pituitary. Reduces lactation and pseudopregnancy symptoms. Alternative to cabergoline and bromocriptine.
At a glance
Class
Serotonin Antagonist / Prolactin Inhibitor
Storage
Store at room temperature, protect from light
Dosing
Used for pseudopregnancy/pseudolactation
Used for feline pseudolactation
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Safety
Clinical resolution of pseudopregnancyGI tolerance
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Interactions
No documented interactions.
FAQs
Frequently asked questions
›What is Metergoline?
Metergoline is a serotonin antagonist / prolactin inhibitor used in pets. Ergoline derivative that antagonizes serotonin (5-HT2) receptors and inhibits prolactin secretion from the anterior pituitary. Reduces lactation and pseudopregnancy symptoms. Alternative to cabergoline and bromocriptine.
›What is Metergoline used for in pets?
Metergoline is used in veterinary medicine for: Used for pseudopregnancy/pseudolactation; Used for feline pseudolactation.
›What is the Metergoline dose for dogs?
For dogs, Metergoline is typically dosed as follows — Used for pseudopregnancy/pseudolactation: 0.1–0.2 mg/kg PO q12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What is the Metergoline dose for cats?
For cats, Metergoline is typically dosed as follows — Used for feline pseudolactation: 0.1 mg/kg PO q12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›Does Metergoline need a prescription?
Yes. Metergoline is a prescription medication and should only be administered under veterinary supervision.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →References
References
The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.
Textbooks & handbooks — 5
- Plumb's Veterinary Drug Handbook
- Withrow & MacEwen's Small Animal Clinical Oncology
- Merck Veterinary Manual
- NRC Nutrient Requirements of Dogs and Cats
- Veterinary Pharmacology and Therapeutics (Riviere & Papich)
Clinical guidelines & consensus — 4
- ASPCA Animal Poison Control Center Guidelines
- AAHA Diabetes Management Guidelines
- ASPCA Poison Control Guidelines
- RECOVER CPR Guidelines
Journals & peer-reviewed studies — 2
- EPIC Study (J Vet Intern Med 2016)
- JVIM FAT CAT Study
Regulatory & approvals — 1
- CDSCO Veterinary Drug Approval Registry (1969–2026)
Databases — 1
- Washington State University VCPL MDR1 Database