Direct smooth muscle relaxant with anticholinergic (antimuscarinic M3) properties that reduces detrusor muscle contractions and increases bladder capacity. Used for urge incontinence and detrusor hyperreflexia.
At a glance
Class
Anticholinergic / Antispasmodic (Urinary)
Storage
Store at room temperature below 30°C
Dosing
Used for urge incontinence, detrusor instability, and reflex dyssynergia
Used for feline lower urinary tract disease with detrusor instability
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
Urinary frequency/incontinence episodesUrine output (retention)GI motilityHeart rate
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 Oxybutynin?
Oxybutynin is a anticholinergic / antispasmodic (urinary) used in pets. Direct smooth muscle relaxant with anticholinergic (antimuscarinic M3) properties that reduces detrusor muscle contractions and increases bladder capacity. Used for urge incontinence and detrusor hyperreflexia.
›What is Oxybutynin used for in pets?
Oxybutynin is used in veterinary medicine for: Used for urge incontinence, detrusor instability, and reflex dyssynergia; Used for feline lower urinary tract disease with detrusor instability.
›What is the Oxybutynin dose for dogs?
For dogs, Oxybutynin is typically dosed as follows — Used for urge incontinence, detrusor instability, and reflex dyssynergia: 1.25–5 mg/dog PO q8–12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What is the Oxybutynin dose for cats?
For cats, Oxybutynin is typically dosed as follows — Used for feline lower urinary tract disease with detrusor instability: 0.5–1.25 mg/cat PO q8–12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›Does Oxybutynin need a prescription?
Yes. Oxybutynin 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