Zycortal

Zycortal (desoxycorticosterone pivalate) is a prolonged-release injectable suspension used to replace mineralocorticoid hormones in dogs suffering from primary hypoadrenocorticism (Addison's disease). It helps control sodium and potassium balance in the body.

Dosage by Body Weight

The initial starting dose is 2.2 mg/kg (1 mg/lb) body weight administered subcutaneously. Dosage and interval are adjusted based on clinical signs and serum sodium/potassium ratios measured approximately 10 days and 25 days after administration.

  1. Body Weight
    Below 5 kg
    Dose
    Up to 11 mg (Up to 0.44 mL)
    Frequency
    Every 25 days
    Tracking Notes
    Dose calculated at 2.2 mg/kg. Exact dosing should be determined by a veterinarian based on precise weight.
  2. Body Weight
    5-7 kg
    Dose
    11 to 15.4 mg (0.44 to 0.62 mL)
    Frequency
    Every 25 days
    Tracking Notes
    Monitor serum electrolytes at day 10 and day 25 post-injection to adjust dose or interval.
  3. Body Weight
    8-10 kg
    Dose
    17.6 to 22 mg (0.7 to 0.88 mL)
    Frequency
    Every 25 days
    Tracking Notes
    Administer subcutaneously. Shake vial vigorously before use to resuspend.
  4. Body Weight
    11-15 kg
    Dose
    24.2 to 33 mg (0.97 to 1.32 mL)
    Frequency
    Every 25 days
    Tracking Notes
    Adjustments are typically made in increments or decrements of 10% based on clinical response.
  5. Body Weight
    16-20 kg
    Dose
    35.2 to 44 mg (1.41 to 1.76 mL)
    Frequency
    Every 25 days
    Tracking Notes
    Monitor for potential side effects such as polyuria, polydipsia, or injection site reactions.

Formulation

Injectable Suspension

Purpose

Mineralocorticoid replacement therapy for dogs with primary hypoadrenocorticism (Addison's disease)

Generic Name

Desoxycorticosterone pivalate

Scheduled Drug

No. This medicine is generally not treated as a scheduled/prescription-only drug in common consumer references, but local rules may vary.

Alternatives

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.