Zycortal vs Percorten-V Cost: Canine Addison's DOCP Guide (2026)
Essential Pricing Takeaways
- • Zycortal and Percorten-V are FDA-approved injectable suspensions of Desoxycorticosterone Pivalate (DOCP 25mg/mL) providing lifelong mineralocorticoid replacement for canine Addison's disease.
- • Purchasing a 4mL multi-dose DOCP vial from licensed online dispensaries ($198.50 to $204.00) reduces monthly medication costs to $35 to $55 for a medium dog, compared to $85 to $130 per monthly clinic injection.
- • Zycortal is specifically labeled for subcutaneous (SubQ) injection, whereas Percorten-V is labeled for intramuscular (IM) administration.
- • DOCP regulates vital serum electrolytes (potassium and sodium) but contains zero glucocorticoid activity; dogs with primary hypoadrenocorticism must also receive daily low-dose oral prednisone.
- • Prices below were checked on retailer sites in November 2026 and change often.
Canine hypoadrenocorticism, universally referred to as Addison's disease, is a life-threatening endocrine disorder resulting from immune-mediated bilateral destruction of the adrenal cortex. Without functional adrenal tissue, the canine body suffers complete deficiency of two vital hormone classes: glucocorticoids (cortisol) and mineralocorticoids (aldosterone).
The absence of aldosterone completely disrupts renal electrolyte regulation. Sodium and water are rapidly excreted through the urine while potassium is abnormally retained, resulting in severe hyperkalemia, hyponatremia, vascular hypovolemia, bradycardia, and sudden cardiovascular collapse (Addisonian crisis).
Desoxycorticosterone Pivalate (DOCP 25mg/mL) is the gold-standard, lifelong mineralocorticoid replacement therapy for dogs. Formulated as a long-acting microcrystalline depot suspension, DOCP maintains electrolyte equilibrium for 25 to 30 days following each injection. Two major FDA-approved commercial formulations dominate veterinary medicine: Zycortal (manufactured by Dechra) and Percorten-V (manufactured by Elanco).
Because canine Addison's requires lifelong monthly injections, clinic injection fees create substantial financial strain. Purchasing 4mL multi-dose vials online and administering injections at home cuts annual treatment expenses significantly.
This 2026 comparative pricing and clinical guide evaluates Zycortal versus Percorten-V, details subcutaneous injection protocols, compares pharmacy prices, and explains sodium-potassium monitoring.
Zycortal vs Percorten-V: FDA-Approved DOCP Injectables Comparison Across Dispensaries
| DOCP Product & Channel | Active Strength & Formulation | Multi-Dose 4mL Vial Cost | Estimated Doses (40 lb Dog) | Approved Route of Administration | Value Assessment | Action |
|---|---|---|---|---|---|---|
| Zycortal Suspension (Walmart PetRx) | DOCP 25mg/mL (Dechra) | 4mL Multi-Dose Amber Vial | $198.50 | 3 to 5 Monthly Doses | Lowest Online Pharmacy Price | Check Price → |
| Zycortal Suspension (Chewy Pharmacy) | DOCP 25mg/mL (Dechra) | 4mL Multi-Dose Amber Vial | $204.00 | 3 to 5 Monthly Doses | Fastest Vet Verification Sync | Check Price → |
| Percorten-V Suspension (Chewy / Walmart) | DOCP 25mg/mL (Elanco) | 4mL Multi-Dose Vial | $212.00 - $218.00 | 3 to 5 Monthly Doses | Original Pioneer DOCP Formulation | Check Price → |
| Veterinary Hospital In-Clinic Injections | Clinic-Administered DOCP Dose | Single Monthly In-Clinic Injection | $85.00 - $130.00 / month | 1 Single Dose | Includes Exam Fee; Most Expensive | Check Price → |
*Prices below were checked on retailer sites in November 2026 and change often.
Top Recommended Options & Discounts
Zycortal Injectable Suspension 4mL (Walmart PetRx)
Best For: Pet parents managing canine hypoadrenocorticism wanting lowest cost per milligram on FDA-approved subcutaneous DOCP
- ✓ FDA-cleared specifically for convenient subcutaneous (SubQ) administration in dogs
- ✓ Multi-dose 4mL vial provides months of maintenance for small to medium canines
- ✓ Direct electronic prescription integration with your veterinary hospital
Zycortal Injectable Suspension 4mL (Chewy Pharmacy)
Best For: Dog owners seeking automated prescription renewal tracking and temperature-safe express shipping
- ✓ Direct clinic outreach handled automatically by Chewy pharmacy team
- ✓ Scheduled AutoShip delivery on replacement orders
- ✓ Free 1-2 day express shipping straight to your doorstep
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Example comparison based on listed retail estimates.
Pharmacological Comparison: Zycortal vs Percorten-V
Both Zycortal and Percorten-V contain the identical active pharmaceutical ingredient: desoxycorticosterone pivalate at a concentration of 25 mg/mL in an aqueous microcrystalline suspension. Upon injection, the microcrystals dissolve slowly from the tissue depot into interstitial fluids, hydrolyzing into active desoxycorticosterone.
The drug acts on mineralocorticoid receptors in renal distal convoluted tubules, increasing sodium and chloride reabsorption while enhancing potassium and hydrogen ion excretion. This restores normal blood volume, stabilizes arterial blood pressure, and reverses hyperkalemic cardiac dysrhythmias.
Key clinical distinctions between the two products include:
1. Approved Administration Route: According to their FDA-approved labels, Zycortal is labeled for subcutaneous (SubQ) administration in dogs only, whereas Percorten-V is labeled for intramuscular (IM) injection only. Subcutaneous administration makes home injections significantly easier, less painful, and less prone to muscle trauma compared to intramuscular delivery.
2. Preservative Formulation: Zycortal utilizes chlorocresol as a multi-dose antimicrobial preservative, whereas Percorten-V contains thimerosal (an organomercury compound). Many dogs exhibit fewer local injection-site swellings with Zycortal.
3. Package Volume & Cost: Both products are packaged in 4mL glass vials, but Zycortal is typically priced $10 to $20 lower per vial across licensed pet pharmacies.
Clinical Dosing Optimization & Home Subcutaneous Administration
While the manufacturer package insert specifies a starting dose of 2.2 mg/kg administered every 25 days, extensive clinical research from the American College of Veterinary Internal Medicine (ACVIM) demonstrates that most dogs are successfully maintained on significantly lower dosages—typically 1.1 mg/kg to 1.5 mg/kg administered every 28 to 30 days.
Starting at lower research-backed dosages reduces monthly medication consumption, significantly lowering annual expenses while preventing common side effects of mineralocorticoid excess (such as excessive thirst, urination, and low blood potassium).
Pet parents can master home subcutaneous administration with brief veterinary instruction:
• Invert the vial gently 10 to 15 times before drawing to resuspend the microcrystals into a uniform milky liquid.
• Use a fine 25-gauge or 22-gauge needle attached to a 1mL or 3mL syringe for exact volume measurement.
• Inject subcutaneously between the shoulder blades or over the lateral thorax, pinching the skin into a tent.
• Glucocorticoid Reminder: DOCP replaces only aldosterone. All dogs with primary Addison's disease also require a low daily physiological replacement dose of oral prednisone (0.1 to 0.2 mg/kg daily) to maintain appetite, energy, and stress resilience.
Clinical & Regulatory References
Review the primary FDA-approved drug monographs governing canine Addison's therapy:
1. DailyMed (U.S. National Library of Medicine): Zycortal Monograph (Full FDA-approved drug monograph and subcutaneous administration instructions under NADA 141-444).
2. DailyMed (U.S. National Library of Medicine): Percorten-V Monograph (Full FDA-approved drug monograph and intramuscular administration instructions under NADA 141-029).