Buy Zycortal Injection Suspension (DOCP) 25mg/ml Online: The Definitive Veterinary Guide to Mineralocorticoid Replacement Therapy, Electrolyte Homeostasis, and Long-Acting Addison’s Disease Management in Dogs
Primary Hypoadrenocorticism, commonly known as Addison’s disease, is a life-threatening endocrinopathy in dogs characterized by the immune-mediated destruction of the adrenal cortex. The adrenal cortex is responsible for producing two essential steroid hormones: glucocorticoids (cortisol) and mineralocorticoids (aldosterone). While glucocorticoids regulate stress responses and glucose metabolism, aldosterone plays an irreplaceable role in maintaining renal electrolyte balance, fluid volume, and systemic blood pressure.
When aldosterone production fails, the kidneys lose their ability to conserve sodium and chloride while excreting potassium. This hormonal deficit leads to severe electrolyte imbalances characterized by hyponatremia (low blood sodium) and hyperkalemia (high blood potassium).
Left untreated, severe hyperkalemia impairs cardiac conduction, triggering bradycardia, weakness, cardiovascular collapse, hypovolemic shock, and death during an acute Addisonian crisis.
To restore physiological electrolyte balance and provide long-term endocrine stabilization, veterinary endocrinologists rely on targeted replacement therapy. Zycortal Injection (manufactured by Dechra Veterinary Products) is the premier, FDA-approved injectable mineralocorticoid replacement therapy designed specifically for dogs. Powered by Desoxycorticosterone Pivalate (DOCP) at a concentration of $25\ \text{mg/mL}$, Zycortal acts as a prolonged-release subcutaneous depot, mimicking endogenous aldosterone to regulate sodium and potassium retention over a multi-week period.

This comprehensive clinical manual covers DOCP endocrinological mechanisms, electrolyte renal transport kinetics, patient monitoring protocols, and precise dosing guidelines for Zycortal.
Endocrinological Mechanisms & Renal Electrolyte Homeostasis
Zycortal Injection provides a prolonged-release hormonal replacement mechanism that directly restores normal distal renal tubule function:
[Zycortal Injection 25mg/ml Administered]
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[Subcutaneous Injection & Slow Depot Release]
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[DOCP Binds Renal Mineralocorticoid Receptors]
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[SODIUM & WATER RETENTION] [POTASSIUM EXCRETION]
(Distal Tubule Na+/K+ ATPase) (Cortical Collecting Duct)
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v v
[Promotes Renal Sodium Reabsorption] [Increases Renal Potassium Secretion]
(Elevates Serum Sodium & Chloride) (Lowers Toxic Serum Potassium Levels)
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v v
[Restores Intravascular Blood Volume] [Normalizes Cardiac Electrical Function]
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------------------------> <----------------------
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v
[Complete Stabilization of Canine Addison's Disease]
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[Prevention of Fatal Addisonian Crisis & Cardiac Arrest]
Mineralocorticoid Receptor Activation via DOCP
Desoxycorticosterone Pivalate (DOCP) ($25\ \text{mg/mL}$) is a synthetic ester precursor of desoxycorticosterone, a naturally occurring mineralocorticoid hormone. Following subcutaneous injection, the microcrystalline suspension forms a localized tissue depot that slowly releases DOCP into the bloodstream, where it is hydrolyzed into active desoxycorticosterone.
Renal Epithelial Transport Kinetics
Desoxycorticosterone binds with high specificity to mineralocorticoid receptors located on principal cells within the distal convoluted tubules and cortical collecting ducts of the kidneys:
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Sodium and Chloride Reabsorption: Up-regulates the $\text{Na}^+/\text{K}^+$ ATPase pump and epithelial sodium channels ($\text{ENaC}$), driving active sodium reabsorption back into the capillaries. Water follows passively, restoring extracellular fluid volume and blood pressure.
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Potassium Secretion: Stimulates renal tubular secretion of potassium into urine, rapidly resolving hyperkalemia and preventing life-threatening cardiac dysrhythmias.
Glucocorticoid Supplementation Requirement
Because Zycortal provides pure mineralocorticoid activity with virtually no glucocorticoid activity, dogs with Addison’s disease treated with Zycortal Injection must also receive daily oral glucocorticoid supplementation (such as low-dose prednisone) to meet baseline stress requirements.
Core Canine Clinical Indications
Zycortal 25mg/ml is an essential therapeutic tool for companion animal veterinary practices:
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Replacement Therapy for Primary Hypoadrenocorticism: Indicated as a replacement therapy for mineralocorticoid deficiency in dogs diagnosed with primary hypoadrenocorticism (Addison’s disease).
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Correction of Severe Hyponatremia & Hyperkalemia: Normalizes abnormal serum sodium-to-potassium ($\text{Na}^+/\text{K}^+$) ratios, restoring vital organ perfusion.
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Long-Term Addisonian Maintenance: Provides predictable, extended hormonal control via a single subcutaneous injection administered approximately every 25 to 30 days.
Recommended Administration and Dosing Protocols
To ensure safety and optimal therapeutic outcomes, Zycortal Injection must be administered strictly according to weight-based parameters and monitored via serial electrolyte panels.
Canine Dosage Reference Table
The table below outlines standard clinical dosing parameters for Zycortal Injection Suspension ($25\ \text{mg/mL}$):
| Clinical Application | Starting Dosage Rate | Volumetric Dosing Ratio | Approved Route | Re-evaluation Window |
| Initial Addison’s Maintenance | $2.2\ \text{mg/kg}$ body weight | $0.088\ \text{mL}$ per $\text{kg}$ ($0.04\ \text{mL/lb}$) | Subcutaneous (SQ) Only | Day 10-14 & Day 25 post-injection |
| Long-Term Maintenance Adjustments | $1.5\ \text{mg/kg}$ to $2.2\ \text{mg/kg}$ | Titrated based on serum levels | Subcutaneous (SQ) Only | Every 3 to 6 months once stable |
Clinical Safety, Contraindications, and Storage
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Do Not Administer Intravenously:Zycortal Injection is a microcrystalline suspension and is formulated strictly for Subcutaneous (SQ) injection. Do not administer intravenously or intramuscularly.
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Contraindications: Do not use in dogs suffering from severe renal disease, primary congestive heart failure, or conditions characterized by edema, as mineralocorticoid retention of sodium and fluid can exacerbate fluid overload.
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Adverse Reactions: Common side effects include polyuria (increased urination), polydipsia (increased thirst), lethargy, anorexia, and localized injection site reactions. Overdosing can lead to hypernatremia, hypokalemia, or fluid retention.
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Daily Prednisone Requirement: Zycortal does not replace cortisol. Patients require concurrent daily oral glucocorticoid therapy (e.g., prednisone at $0.05\ \text{mg/kg/day}$ to $0.22\ \text{mg/kg/day}$), titrated to clinical signs.
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Storage Parameters: Store at controlled room temperature between 20°C and 25°C (68°F to 77°F). Do not freeze. Protect from light. Use within 4 months of first puncture.
Frequently Asked Questions (FAQ)
What is the difference between Zycortal and Percorten-V?
Both Zycortal and Percorten-V contain Desoxycorticosterone Pivalate (DOCP) at $25\ \text{mg/mL}$. Zycortal is manufactured by Dechra and is approved globally for subcutaneous administration, featuring extensive clinical dosing trial data.
Does Zycortal replace the need for oral prednisone?
No. Zycortal replaces only mineralocorticoids (aldosterone). Dogs with primary hypoadrenocorticism also lack glucocorticoids (cortisol) and require concurrent daily oral prednisone therapy alongside their monthly Zycortal injections.
How often do dogs need a Zycortal injection?
Initial doses are typically given every 25 to 30 days. Serial electrolyte monitoring at Day 10-14 and Day 25 allows your veterinarian to adjust the exact dose and timing interval tailored to your dog’s physiological response.
Where can I buy genuine Zycortal online?
You can safely purchase authentic, factory-sealed Zycortal Suspension online through Vet Pharma Med. We manage our full inventory under strict environmental controls to guarantee absolute product quality and full therapeutic potency.
Secure Premium Sourcing from Vet Pharma Med
At Vet Pharma Med, we understand that managing chronic canine endocrine conditions requires absolute product reliability. Every vial of Zycortal Suspension (DOCP) 25mg/ml is sourced through authorized veterinary distribution channels, stored in our climate-controlled facility, and shipped securely to ensure complete product stability.
For wholesale veterinary clinic accounts, prescription management support, or logistics tracking assistance, please reach out to our professional support desk directly at our contact us page.
Key Features:
Active Ingredient: 25 mg/ml desoxycorticosterone pivalate
Indication: Replacement therapy for mineralocorticoid deficiency in Addison’s Disease
Administration: Subcutaneous (SQ) injection
Dosage: 1 mg per pound of body weight every 25 days
Benefits of Zycortal Suspension for Dogs:
Enhanced Quality of Life: Improves overall well-being and comfort in dogs with Addison’s Disease
Electrolyte Balance: Normalizes sodium and potassium levels, addressing electrolyte imbalances
Increased Blood Volume: Expands extracellular fluid volume, enhancing blood volume and cardiac output
Prevents Complications: Reduces the risk of hypotensive shock and prerenal azotemia
How Zycortal Suspension Works:
Addison’s Disease affects the adrenal glands, disrupting hormone production necessary for regulating key bodily functions. Zycortal Suspension helps replace the missing mineralocorticoids, thereby restoring electrolyte balance and fluid volume. This helps manage symptoms and maintain stable blood pressure and overall health.
Important Considerations:
Not a Cure: Zycortal helps manage symptoms but does not cure Addison’s Disease
Glucocorticoid Therapy Required: Additional daily glucocorticoid treatment (e.g., prednisone or prednisolone) is necessary
Lifelong Treatment: Ongoing therapy with Zycortal and glucocorticoids is required for effective management
Administration Instructions:
Injection: Administer via subcutaneous (SQ) injection
Initial Dose: 1 mg per pound of body weight every 25 days
Follow Directions: Give exactly as prescribed by your veterinarian. Consult your veterinarian if you have any questions.
Zycortal Suspension offers crucial support for managing Addison’s Disease in dogs, helping to stabilize their condition and enhance their quality of life. Ensure regular administration and follow veterinary instructions for optimal results.

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