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Bethanechol

Prescription
Parasympathomimetic (cholinergic agonist)
Last reviewed 19 Apr 2026 · PetCare.AI Editorial Team
Species
Dog, Cat
Brands
2 available
Formulations
3

Mechanism of action

Directly stimulates muscarinic receptors on the detrusor muscle, enhancing bladder contraction; resistant to cholinesterase degradation

At a glance

Class
Parasympathomimetic (cholinergic agonist)
Schedule
Prescription
Storage
Store below 25°C

Dosing

🐕

Dog

Detrusor atony / Urinary retention (non-obstructive)
Dose
2.5–25 mg per dog
Route
PO
Frequency
TID
Max dose
50 mg/dose; 150 mg/day
Duration: As needed; until detrusor tone returns
🐈

Cat

Detrusor atony / Urinary retention (non-obstructive)
Dose
1.25–5 mg per cat
Route
PO
Frequency
TID
Max dose
7.5 mg/dose; 22.5 mg/day
Duration: As needed; until detrusor tone returns
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 →

Formulations

💊

Tablet — 3

Strength
5mg
Available in India
Strength
10mg
Available in India
Strength
25mg
Available in India

Storage

Store below 25°C

Safety

Absolute contraindications — do not use

  • Urinary obstruction (mechanical)
    Must rule out obstruction before use
  • GI obstruction

Use with caution

  • Hyperthyroidism
    May exacerbate cardiac effects

Adverse effects

Common
Salivation
Vomiting
Diarrhoea
Abdominal cramping
Serious
Bradycardia
Bronchospasm
Hypotension

Monitoring parameters

Urination patternResidual urine volume (ultrasound)Heart 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.

Brands

International

Urecholine
Merck

India

Urotonin
Sun Pharma

FAQs

Frequently asked questions

What is Bethanechol?
Bethanechol is a parasympathomimetic (cholinergic agonist) used in pets. Directly stimulates muscarinic receptors on the detrusor muscle, enhancing bladder contraction; resistant to cholinesterase degradation
What is Bethanechol used for in pets?
Bethanechol is used in veterinary medicine for: Detrusor atony / Urinary retention (non-obstructive).
What is the Bethanechol dose for dogs?
For dogs, Bethanechol is typically dosed as follows — Detrusor atony / Urinary retention (non-obstructive): 2.5–25 mg per dog PO TID. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
What is the Bethanechol dose for cats?
For cats, Bethanechol is typically dosed as follows — Detrusor atony / Urinary retention (non-obstructive): 1.25–5 mg per cat PO TID. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
What are the side effects of Bethanechol?
Common: Salivation, Vomiting, Diarrhoea, Abdominal cramping. Serious (call your vet immediately): Bradycardia, Bronchospasm, Hypotension.
Does Bethanechol need a prescription?
Yes. Bethanechol is a prescription medication and should only be administered under veterinary supervision.
When should Bethanechol not be used?
Do not use Bethanechol if: Urinary obstruction (mechanical); GI obstruction.
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
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