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GuideMarch 2026· 7 min read
Stopping cortisone: why you must never simply leave out prednisolone
Cortisone is one of the most effective — and most feared — medications. The long list of side effects tempts many people to stop it as quickly as possible. Understandable — but dangerous. Because simply leaving cortisone out can be worse than the side effects themselves.
EMERGENCY: Addisonian crisis → call 112 (in the US: 911) immediately!
With a severe drop in blood pressure, circulatory collapse, confusion or vomiting after stopping cortisone, call the emergency number 112 (in the US: 911) immediately — a possible adrenal crisis.
The mechanism: why the adrenal gland needs time
Your body produces about 5–7 mg of cortisol daily (equivalent to roughly 5 mg of prednisolone). Production is controlled via a feedback loop:
When you take prednisolone, the brain recognizes "enough cortisol" — and ramps down its own production. With longer use, the adrenal cortex literally shrinks (atrophy). It needs weeks to months to work fully again.
The Cushing threshold: this is where it gets critical
From about 7.5 mg of prednisolone daily, the body's own cortisol production is suppressed. Below this threshold the risk is low. Taking it in the evening suppresses more than in the morning — which is why cortisone should always be taken in the morning, unless prescribed otherwise.
From when do I have to taper?
Duration of use
Dose
Taper?
Under 2 weeks
Low
✓ Usually not needed
2–4 weeks
Under 7.5 mg/day
✓ Usually not needed
2–4 weeks
Over 7.5 mg/day
⚠ Taper briefly
Over 4 weeks
Over 7.5 mg/day
⛔ Tapering mandatory
Long-term therapy (months–years)
Any
⛔ Taper over weeks–months
A concrete tapering schedule for prednisolone
As a guide — your doctor adjusts it individually:
Phase 1
> 20 mg → 10 mg
Fast reduction
Reduce by 5–10 mg every 1–2 weeks. In this range the adrenal gland is strongly suppressed anyway — the steps can be larger. Still far from the physiological zone.
Phase 2
10 mg → 5 mg
Moderate reduction
Reduce by 2.5 mg every 1–2 weeks. Here you approach the physiological dose — become more cautious. The adrenal gland increasingly has to do its part.
Phase 3
5 mg → 0 mg
⚠ Critical zone
Reduce by 1 mg every 1–2 weeks — or even 0.5 mg. The most difficult phase. Here the adrenal gland has to produce on its own again. With long-term therapy, this phase can take months.
Reduced too fast? Back to the last well-tolerated dose
If you develop symptoms during tapering: do not continue. Return to the last well-tolerated dose — then agree a slower plan with your doctor.
In the worst case life-threatening → 112 (in the US: 911)
Stressful situations during tapering
As long as the adrenal gland is recovering, it cannot respond adequately to acute stress (fever, surgery, accident, infection) — the body needs considerably more cortisol in these situations.
Rule of thumb for the transition period:
With a fever > 38.5°C, vomiting/diarrhoea or planned surgery: temporarily increase the cortisone dose (as instructed by a doctor). This rule applies during tapering and for up to 12 months after stopping long-term cortisone therapy. Some patients receive an emergency card documenting that they need cortisol in an emergency.
Local cortisone: spray, ointment, injection — do I have to taper too?
Nasal spray / inhaler
No tapering needed
Systemic absorption is minimal. But: never stop asthma inhalers on your own — the asthma would then no longer be controlled.
Cortisone ointment
Tapering rarely needed
Minimal systemic effect. Exception: very large-area, long-term use of strong preparations.
Joint injection (one-off)
No tapering needed
A single intra-articular injection has hardly any effect on the adrenal gland.
Depot injection (intramuscular)
Caution — ask your doctor
Can suppress the adrenal gland more than tablets, as it gives an evenly raised level over a longer time. Inform your doctor.
Common questions about stopping cortisone
With use over 2 weeks at doses over 7.5 mg of prednisolone/day, you should taper. Short pulse courses (e.g. 5 days for an asthma attack) can usually be stopped directly — always talk to your doctor first.
Muscle pain, fatigue and flu-like complaints show that the body is adjusting. Unpleasant, but temporary. If the symptoms are very strong: go back to the last well-tolerated dose and reduce more slowly.
An acute cortisol deficiency with a severe drop in blood pressure, circulatory failure and confusion — life-threatening. It can occur when cortisone is stopped abruptly after long-term therapy. In an emergency, call 112 (in the US: 911) immediately.
Very individual. After short therapy: days to weeks. After long-term therapy: months, sometimes up to a year. During this time, adrenal function must be monitored by a doctor (an ACTH stimulation test).
As a rule, no. Local applications on the skin have minimal systemic effect. Exception: very large-area, long-term use of strong cortisone ointments.
No — not because of the adrenal gland (which is barely affected by inhaled preparations), but because the asthma is then no longer controlled. Never change asthma therapy on your own.
Safely support dose changes during tapering
When tapering cortisone, the dose changes constantly. brite always reminds you of the current daily dose — and documents every step for your next doctor's appointment.
Medical disclaimer: This page does not replace medical advice. Never stop prednisolone on your own. Discuss every dose change with your doctor. With symptoms of an adrenal crisis, call 112 (in the US: 911) immediately. As of: March 2026.
