Dogs with severe spinal cord injuries sometimes lose the ability to urinate on their own. Prazosin is a medication that helps relax the bladder and reduce urinary sphincter tone, making it easier for dogs and cats to urinate, or for owners to assist with bladder expression. In most cases, prazosin is prescribed for short-term use.
Dosing
This medication has a wide dosing range and is typically given 2–3 times daily, sometimes just before bladder expression. The dose may be increased if the initial amount is not effective, or decreased if side effects occur. Always follow your veterinarian’s specific instructions, and do not make any adjustments without their supervision.
Side Effects
- Dizziness, lethargy, or weakness:Â These signs are usually related to lowered blood pressure and often improve if the dose is reduced or if the medication is discontinued.
- Elevated third eyelid:Â A harmless cosmetic effect with no impact on health.
- Digestive upset:Â Vomiting, diarrhea, constipation, or loss of appetite may occur, but often improve if the medication is given with a small amount of food.
- Rapid heart rate, hyperactivity, or increased body temperature: While often not serious, they may be concerning, especially if your pet is on other medications that lower blood pressure.