What are the indications for prescribing oral hydrocortisone tablets to a patient?

Indications for Oral Hydrocortisone Tablets

Oral hydrocortisone tablets are prescribed primarily for physiological glucocorticoid replacement therapy in patients with adrenal insufficiency (both primary and secondary), and secondarily for pharmacological treatment of various inflammatory and autoimmune conditions requiring corticosteroid therapy. 1

Primary Indication: Adrenal Insufficiency Replacement Therapy

The most critical indication for oral hydrocortisone is physiological replacement in patients with confirmed adrenal insufficiency who cannot produce adequate cortisol. This includes:

Primary Adrenal Insufficiency (Addison's Disease)

• Recommended dosing: 15-25 mg daily in divided doses (typically 10-5-5 mg or 20-10-10 mg pattern), with the highest dose given upon awakening 2, 3
• Patients require both glucocorticoid (hydrocortisone) and mineralocorticoid (fludrocortisone) replacement
• Weight-adjusted dosing (approximately 8 mg/m²/day in children) reduces interpatient variability and prevents overexposure 4, 2

Secondary Adrenal Insufficiency

• Due to pituitary or hypothalamic disease
• Same hydrocortisone dosing as primary AI, but mineralocorticoid replacement typically not needed 5

Glucocorticoid-Induced Adrenal Insufficiency

• Occurs in patients receiving therapeutic glucocorticoids (prednisolone ≥5 mg daily for >1 month) 5, 6
• These patients require stress-dose coverage during illness or surgery to prevent adrenal crisis

Critical Stress-Dose Adjustments

Patients with adrenal insufficiency must increase their oral hydrocortisone during physiological stress to prevent life-threatening adrenal crisis, which occurs at a rate of 6-8 episodes per 100 patient-years and carries mortality risk 5:

Mild Stress (fever, minor infection)

• Double or triple the usual daily dose (at least 60 mg/day in adults) until stress resolves 3

Moderate-Major Stress (surgery, severe illness)

• Parenteral hydrocortisone 100 mg IV bolus followed by 200 mg/24h continuous infusion 5
• After stabilization, resume oral hydrocortisone at triple the normal dose, then taper over several days 3

Perioperative Management

• Major surgery: 100 mg IV hydrocortisone at induction, then 200 mg/24h infusion 5
• Postoperatively: double oral doses for 48 hours to 1 week depending on recovery 5

Secondary Indication: Pharmacological Anti-Inflammatory Therapy

The FDA label indicates hydrocortisone tablets for various conditions requiring supraphysiological corticosteroid doses 1:

• Endocrine disorders: Congenital adrenal hyperplasia, nonsuppurative thyroiditis
• Rheumatic disorders: Acute rheumatic carditis, systemic lupus erythematosus, polymyositis
• Dermatologic diseases: Severe erythema multiforme (Stevens-Johnson syndrome), pemphigus
• Allergic states: Severe seasonal/perennial allergic rhinitis, serum sickness
• Ophthalmic diseases: Severe acute/chronic allergic processes, optic neuritis, sympathetic ophthalmia
• Respiratory diseases: Symptomatic sarcoidosis, berylliosis, aspiration pneumonitis
• Hematologic disorders: Idiopathic thrombocytopenic purpura, acquired hemolytic anemia
• Neoplastic diseases: Palliative management of leukemias and lymphomas
• Gastrointestinal diseases: Ulcerative colitis, regional enteritis (during critical periods)
• Nervous system: Acute exacerbations of multiple sclerosis (200 mg prednisolone equivalent for 1 week, then 80 mg every other day for 1 month) 1

Dosing for pharmacological therapy ranges from 20-240 mg daily depending on disease severity and must be individualized 1.

Critical Safety Considerations

Common Pitfalls to Avoid

• Never abruptly discontinue after long-term therapy—taper gradually to allow HPA axis recovery 1
• Medication errors and omissions during hospitalization cause 8.6% of adrenal crises in patients with chronic AI 5
• Patients with comorbidities (asthma, diabetes) are at higher risk for adrenal crisis 5

Patient Education Requirements

All patients on replacement therapy must 3:

• Carry a medical alert card identifying adrenal insufficiency
• Know how to self-adjust doses during stress
• Have emergency injectable hydrocortisone (100 mg) available at all times
• Understand early warning signs of adrenal crisis (severe fatigue, nausea, hypotension)

Monitoring

• Clinical assessment is preferred over hormonal monitoring for dose adjustment 2, 3
• Monitor for signs of over-replacement (weight gain, hypertension, hyperglycemia) and under-replacement (fatigue, hypotension, salt craving)
• In primary AI, fludrocortisone should be reintroduced when hydrocortisone dose is <50 mg/day 3

Newer Formulations

Modified-release hydrocortisone formulations (Plenadren®, Chronocort®) provide more physiological cortisol profiles and may improve metabolic parameters, though standard immediate-release hydrocortisone remains first-line 3.