If a patient missed two doses of prednisone, should the medication be restarted at the next scheduled dose or should the missed doses be taken?

Management of Missed Prednisone Doses

Resume prednisone at the next scheduled dose without doubling or taking the missed doses, and do not abruptly discontinue the medication. 1

Key Principles

The FDA labeling for prednisone explicitly states: "Do not stop taking this medicine without first talking to your doctor. Avoid abrupt withdrawal of therapy" and "If after long-term therapy the drug is to be stopped, it is recommended that it be withdrawn gradually rather than abruptly." 1 This guidance takes precedence because abrupt discontinuation or erratic dosing can precipitate adrenal crisis in patients with suppressed hypothalamic-pituitary-adrenal (HPA) axis function.

What to Do After Missing Two Doses

• Resume the regular dosing schedule at the next scheduled time
• Do not double the dose to compensate for missed doses 2
• Do not take both missed doses at once
• Continue with the prescribed regimen going forward

Critical Context: HPA Axis Suppression Risk

Patients on prednisone for more than 3 weeks at doses exceeding 7.5 mg daily should be presumed to have HPA axis suppression 3. This suppression means:

• The adrenal glands cannot respond adequately to stress
• Abrupt discontinuation or irregular dosing creates risk of adrenal insufficiency
• The risk persists even with alternate-day therapy 3

The 2024 European Society of Endocrinology/Endocrine Society guidelines emphasize that glucocorticoid tapering requires a cautious approach specifically because of adrenal insufficiency risk, though the risk of clinically significant adrenal crisis from brief interruptions is generally low 4.

Patient Education Points

Educate the patient on:

• The importance of consistent dosing to maintain therapeutic effect and avoid HPA axis disruption
• Taking prednisone in the morning (prior to 9 AM) to minimize adrenal suppression, as this aligns with the body's natural cortisol peak between 2 AM and 8 AM 1
• Using reminders or adherence strategies to prevent future missed doses 2
• Contacting you if they experience symptoms of adrenal insufficiency (fatigue, weakness, nausea, hypotension) after missing doses

Common Pitfalls to Avoid

Do not:

• Instruct the patient to take double doses to "catch up" - this increases risk of adverse effects without clear benefit
• Allow the patient to abruptly stop prednisone after missing doses out of concern about restarting
• Assume that two missed doses have caused complete HPA axis recovery - suppression can persist for 1.25 to 1.5 days after even a single dose of short-acting corticosteroids 1

When to Consider Additional Intervention

If the patient is on chronic medium-to-high dose therapy (>7.5 mg daily for >3 weeks) and experiences symptoms suggestive of adrenal insufficiency after the missed doses, consider:

• Temporarily increasing the prednisone dose for 3 days 3
• In severe cases, switching to intravenous hydrocortisone (e.g., 25 mg twice daily for patients on 10 mg prednisone daily) 3

The underlying disease being treated also matters - if the two missed doses have resulted in disease flare, you may need to temporarily increase the dose to regain control before resuming the taper 1.