Prednisone for Dogs and Cats
Vet-reviewed by Dr. Pippa Elliott, BVMS MRCVS ·
What is Prednisone for Dogs and Cats
Overview
Prednisone is a corticosteroid that the body converts into prednisolone, which is the active form. These medications help reduce inflammation, suppress the immune system, and support the body when it cannot produce enough natural steroids. Because some species, like cats and horses, cannot convert prednisone well, they are usually given prednisolone directly.
Prednisone is commonly used for allergies, autoimmune disease, skin problems, respiratory conditions, and as lifelong therapy for dogs with Addison’s disease. It is usually given by mouth as tablets or liquid, but injectable forms are also used in hospitals. All steroid treatments must be tapered when stopping the medication to prevent serious complications.
Explore more joint and mobility medications in our Mobility section.
What Is Prednisone for Dogs and Cats Used For
| Condition | Notes |
|---|---|
| Allergies | Helps reduce swelling, redness, and itching. |
| Autoimmune diseases | Suppresses harmful immune activity. |
| Addison’s disease (hypoadrenocorticism) | Used as hormone replacement therapy. |
| Skin inflammation | Helps manage itching, hives, dermatitis, and hot spots. |
| Respiratory issues | Reduces airway swelling and inflammation. |
| Immune-mediated anemia or thrombocytopenia | Often part of the main treatment protocol. |
| Cancer therapy | Used as support therapy in some cancers. |
How Prednisone for Dogs and Cats Works
Prednisone reduces inflammation and suppresses the immune system by lowering the production of substances that trigger swelling, itchiness, and immune overreaction. It also replaces missing hormones in pets with Addison’s disease, helping maintain normal body function.
Drug Facts
Prednisone is a synthetic steroid that becomes prednisolone in the body. It has strong anti-inflammatory and immune-suppressing effects and is considered an intermediate-acting steroid. It must always be given exactly as prescribed and tapered slowly when treatment ends.
Common Brands
Prednis-Tab
Drug Class
Corticosteroid
Substance Classification
Not a controlled medication
Generic Status
Generic widely available
Availability
Prescription
Prednisone for Dogs and Cats Dosage Forms
Prednisone is available as tablets, liquid solutions, and injectable forms. Oral tablets are the most common for at-home treatment. Strengths vary, allowing veterinarians to adjust dosing based on the condition and the pet’s size.
Oral tablets (30 pcs)
| Qty/Size | Price as low as | Price per unit |
|---|---|---|
| 5 mg | $6.00 | $0.20 |
| 20 mg | $7.00 | $0.23 |
| 50 mg | $14.00 | $0.46 |
Liquid solution (1 mg/mL)
| Qty/Size | Price as low as | Price per unit |
|---|---|---|
| 120 mL | $12.00 | $0.10 |
Injectable form (25 mg/mL)
| Qty/Size | Price as low as | Price per unit |
|---|---|---|
| 5 mL | $18.00 | $3.60 |
Typical Dosing For Prednisone for Dogs and Cats
Prednisone dosing depends entirely on what condition is being treated. It may be used at low daily doses for hormone replacement or at higher doses for inflammation or immune suppression. Tapering is essential.
Oral Administration
| Group | Typical Dose | Notes |
|---|---|---|
| Dogs (all sizes) | 0.5 to 1 mg/kg once or twice daily | Used for allergies and inflammation; taper when improving. |
| Dogs with Addison’s | 0.05 to 0.2 mg/kg daily | Long-term; once daily dosing preferred. |
| Dogs (immune-mediated diseases) | 1.5 to 2 mg/kg twice daily | Stronger suppression; used short-term under close vet supervision. |
| Dogs in adrenal crisis | 3 to 10 times normal physiological dose | Given in hospital only. |
Risks and Warnings for Prednisone for Dogs and Cats
Prednisone is effective but can cause side effects, especially with long-term use or high doses. Short-term effects include increased thirst, increased urination, increased appetite, panting, restlessness, and occasional behavioral changes. Many pets experience these changes within the first week of treatment.
Long-term use may lead to weight gain, thinning skin, muscle loss, elevated liver enzymes, diabetes, or Cushingoid signs. Pets receiving immune-suppressive doses may experience more severe metabolic changes, such as temporary changes in kidney filtration, increased urine output, and altered electrolytes.
Prednisone must never be stopped suddenly, especially after long-term therapy, because this can cause a life-threatening adrenal crisis.
Prednisone for Dogs and Cats Warnings and Precautions
Use prednisone carefully and only under veterinary supervision.
- Do not use in pets with systemic fungal infections or Cushing’s disease.
- Avoid in pets with ulcers, tuberculosis, or viral infections unless prescribed for Addison’s disease.
- Use caution in pets with diabetes, heart disease, high blood pressure, or kidney problems.
- Do not use in pregnant or nursing animals unless absolutely necessary.
- Prevent long-term high dosing unless monitored closely.
- Always taper the dose; never stop abruptly.
Disclaimer: This information is for educational purposes only and should not replace professional veterinary advice. Always consult your veterinarian before using or combining any medications for your pet.
Frequently Asked Questions (FAQ)
How long does prednisone take to work?
Most pets show improvement within 24 to 48 hours.
Can prednisone be used long term?
Yes, but only at the lowest effective dose and under regular veterinary monitoring.
Why must prednisone be tapered?
Stopping suddenly can cause adrenal gland failure, which is life-threatening.
Can prednisone cause behavior changes?
Yes. Increased restlessness, hunger, vocalizing, or pacing are common.
Is prednisone safe for cats?
Cats usually receive
prednisolone
because they cannot convert prednisone efficiently.
Related Medications & Supplements
Dogs taking prednisone for inflammation or allergic disease may also use other medications that help manage itching, reduce inflammation, or support overall health.
- Prednisolone – closely related steroid often used when liver issues are present
- Apoquel – fast-acting allergy medication for itch relief
- Oclacitinib – generic form of Apoquel for allergy and itch control
- Lokivetmab – injectable monoclonal antibody offering long-lasting allergy relief
- Carprofen – NSAID used when a non-steroid anti-inflammatory is preferred
- Meloxicam – alternative NSAID for chronic pain and inflammation
- Gabapentin – adjunct pain medication often paired with anti-inflammatories
- Amantadine – pain-modulating medication for chronic or difficult-to-manage pain
- Omega-3 fatty acids – natural anti-inflammatory supplement supporting skin and joint health
- Fish oil – common omega-3 source often used alongside steroid therapy
- Welactin – veterinary omega-3 supplement for skin and joint support
- Eicosaderm – concentrated omega-3 supplement for chronic inflammation
References
- Gober, M. & Hillier, A. (2023) ‘Perception and usage of short-term prednisone and prednisolone in dogs’, BMC Vet Res., 19, 91 Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC10364361/
- Pacheva, M., et al. (2025) ‘Influence of Prednisolone Treatment on Serum Bile Acid Concentrations in Cats’, Veterinary Science, 12(10), 933. Available at: https://www.mdpi.com/2306-7381/12/10/933
- Emming, C., et al. (2025) ‘Comparison of prednisolone and alternative glucocorticoid dosing protocols for canine hypoadrenocorticism: insights from a survey-based study', Frontiers in Veterinary Science, 12. Available at: https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2025.1544750/full
- Forsythe, L.R. (2025) ‘Prednisolone / Prednisone – What pet owners should know’, VCA Pet Health Information. Available at: https://vcahospitals.com/know-your-pet/prednisoloneprednisone
- M. Mantelli, B. Roques, T. Blanchard, M. Mounier, M. Quincey, et al. (2022). Short course of immunesuppressive doses of prednisolone, evaluated through a prospective double-masked placebo-controlled clinical trial in healthy Beagles, is associated with sustained modifications in renal, hydration, and electrolytic status. American Journal of Veterinary Research, 83 (5), pp.434-442. Available at: https://hal.inrae.fr/hal-03714600v1/document
- Tham, H.L. & Davis, J.L. (2024) ‘Pharmacology of drugs used in autoimmune dermatopathies in cats and dogs: A narrative review’, Veterinary Dermatology, 35(4), pp. 453-476. Available at: https://onlinelibrary.wiley.com/doi/full/10.1111/vde.13253
Editor
The Webvet Editorial Team is a collective of seasoned pet-care journalists, veterinary content specialists, and industry editors dedicated to delivering accurate, trustworthy, and compassionate pet health information. With decades of combined experience across veterinary reporting, pet wellness education, and consumer product research, our team works closely with veterinarians and certified pet experts to ensure every article is both evidence-based and easy to understand.
Veterinarian · BVMS MRCVS
Dr. Pippa Elliott, BVMS, MRCVS, is a veterinarian with nearly 30 years of experience in companion animal practice. Dr. Elliott earned her Bachelor of Veterinary Medicine and Surgery from the University of Glasgow. She was also designated a Member of the Royal College of Veterinary Surgeons. Married with 2 grown-up kids, Dr. Elliott has a naughty Puggle named Poggle, 3 cats and a bearded dragon.
