How many milliliters of sterile water for injection are required to reconstitute a hydrocortisone sodium succinate vial?

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Last updated: October 23, 2026 • View editorial policy

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Reconstitution of Hydrocortisone Sodium Succinate

For a 100 mg vial of hydrocortisone sodium succinate, add not more than 2 mL of sterile water for injection (or bacteriostatic water for injection or bacteriostatic sodium chloride injection). 1

Reconstitution Details

The FDA-approved drug label provides explicit instructions for preparing hydrocortisone sodium succinate for injection:

  • Volume required: Add not more than 2 mL of diluent to the 100 mg vial
  • Acceptable diluents:
    • Bacteriostatic Water for Injection
    • Bacteriostatic Sodium Chloride Injection
    • Sterile Water for Injection (preservative-free)

1

Important Technical Considerations

Stability after reconstitution: Once reconstituted with the 2 mL of diluent, the solution remains stable for at least 4 hours at room temperature and can be administered directly or by IV piggyback. 1 The reconstituted pH ranges from 7 to 8. 1

Extended storage: If kept at controlled room temperature (20-25°C), unused reconstituted solution should be discarded after 12 hours. Under refrigeration, it may be kept for up to 24 hours before discarding. 1

For IV infusion: After initial reconstitution with 2 mL, this solution may then be further diluted in 100-1000 mL of 5% dextrose in water, isotonic saline, or 5% dextrose in isotonic saline (unless the patient is sodium-restricted). 1

Critical Safety Note

Heat sensitivity: This product is sensitive to heat and should not be autoclaved when sterilizing the exterior of the vial. 1 The reconstituted solution should only be used if it is clear. 1

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.