Home Administration of Intramuscular Solu-Cortef
Patients with adrenal insufficiency should immediately inject 100 mg of Solu-Cortef intramuscularly into the outer thigh (vastus lateralis) or upper outer buttock (ventrogluteal) at the first sign of adrenal crisis—including persistent vomiting, severe diarrhea, systolic blood pressure below 100 mmHg, or severe illness preventing oral intake—and then call emergency services for transport to a hospital. 1, 2
When to Use the Emergency IM Injection
Administer the 100 mg IM hydrocortisone immediately if any of the following occur:
- Persistent vomiting or diarrhea that prevents you from keeping down oral hydrocortisone 1, 2
- Systolic blood pressure below 100 mmHg (if you can measure it at home) 2
- Severe physical stress such as major trauma, high fever (≥39°C), or signs of shock (extreme weakness, confusion, collapse) 1, 2
- Two or more crisis symptoms together: severe fatigue, nausea/vomiting, confusion or somnolence, fever, or severe weakness 2
Do not wait for laboratory confirmation or try to reach your endocrinologist first—immediate injection can be life-saving. 1, 2
Step-by-Step Injection Technique
Preparation
- Reconstitute the vial: Solu-Cortef comes as a powder in an Act-O-Vial system. Press the plastic activator to release the sterile water into the powder chamber, then gently swirl (do not shake vigorously) until the powder is fully dissolved. 3
- Draw up 100 mg (the entire 2 mL from a 250 mg vial if using the single-dose format, or the appropriate volume for a 100 mg dose). 3
- Choose your injection site:
- Vastus lateralis (outer thigh): Preferred for self-injection; locate the middle third of the outer thigh, halfway between the hip and knee. 4, 5
- Ventrogluteal (upper outer buttock): Also safe; place your palm on the hip bone, point your index finger toward the groin, and spread your middle finger back along the iliac crest—the triangle formed is the injection site. 4, 6
- Avoid the dorsogluteal site (upper inner buttock) due to risk of nerve injury. 4, 6
Injection Procedure
- Clean the skin with an alcohol swab and let it air-dry. 5, 6
- Insert the needle at a 90-degree angle using a quick, dart-like motion. Use a needle at least 1 inch (25 mm) long for adults to ensure the medication reaches the muscle. 4, 5
- Aspirate briefly (pull back the plunger slightly) to check for blood; if blood appears, withdraw and choose a new site. If no blood, proceed. 5, 6
- Inject the medication slowly over 5–10 seconds. 5
- Withdraw the needle and apply gentle pressure with a clean gauze pad. Do not massage the site. 5, 6
After the Injection
- Call emergency services immediately (or have someone call for you) and inform them you have adrenal insufficiency and have just self-administered emergency hydrocortisone. 1, 7
- Go to the emergency department even if you feel better—you will need IV fluids (1 liter of saline over the first hour) and continuous IV hydrocortisone (200 mg over 24 hours or 50 mg every 6 hours) to prevent recurrence of crisis. 1, 2
- Bring your Adrenal Insufficiency Action Plan and emergency medical information card to show EMS and hospital staff. 7
Common Pitfalls to Avoid
- Delaying injection while trying to reach your doctor or waiting to see if symptoms improve—adrenal crisis can progress to shock and death within hours. 1, 2
- Using an inadequate needle length (less than 1 inch in adults)—this may result in subcutaneous rather than intramuscular delivery, slowing absorption. 4, 5
- Injecting into the dorsogluteal site—this carries a higher risk of sciatic nerve injury. 4, 6
- Not calling for emergency transport—the single IM dose buys time but is not sufficient treatment for adrenal crisis; you need hospital-level care with IV fluids and ongoing hydrocortisone. 1, 2
Storage and Expiration
- Store your emergency kit at room temperature (below 30°C) and protect from light. 8
- Check expiration dates every 6 months and replace expired vials promptly. 7
- Carry your kit whenever you leave home and ensure family members, school nurses, or caregivers know where it is and how to use it. 7
Special Considerations for Caregivers
- Parents and caregivers of children with adrenal insufficiency should practice the injection technique with their healthcare provider and be prepared to administer the dose without hesitation. 7
- Inform EMS personnel that the patient has adrenal insufficiency and has received an emergency dose; provide the exact time and dose given. 7
- Advocate for EMS protocols in your area to allow paramedics to carry hydrocortisone or to administer the patient's home supply during transport. 7