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Published on: 10/22/2026

Why Steroid Tablets Must Not Be Stopped Before Surgery

Stopping steroid tablets such as prednisolone before an operation can be dangerous because long-term use suppresses the adrenal glands, leaving the body unable to produce the extra cortisol needed to cope with the stress of surgery. Abrupt withdrawal can trigger an adrenal crisis, with low blood pressure, vomiting, severe weakness, and collapse during or after the procedure. For this reason, steroids are usually continued as normal, and anaesthetists often give additional "stress dose" steroid cover through a drip around the time of surgery. Dosing plans differ depending on how long you have taken steroids, the dose, and how major the operation is, so there are several important factors to consider before your surgery date. See below to understand more.

If you take steroid tablets and have surgery coming up, or you have already missed doses and feel unwell, it helps to get clarity fast. A free, instant, online symptom check can help you make sense of symptoms like dizziness, nausea, or extreme fatigue, flag signs that need urgent attention, and prepare the right questions for your surgeon or anaesthetist. It takes only a few minutes and gives you a clearer sense of what to do next.

Last reviewed for medical accuracy: 10/22/2026

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Explanation

Why Steroid Tablets Must Not Be Stopped Before Surgery

If you’re taking steroid tablets before surgery, it’s crucial not to stop them abruptly. Steroid medications (glucocorticoids) are prescribed for many chronic conditions—such as asthma, rheumatoid arthritis, lupus, and inflammatory bowel disease—and they suppress your body’s natural cortisol production. Suddenly discontinuing these drugs can lead to serious complications during and after surgery. This guide explains why you must continue your steroid tablets before surgery, how to manage dosing, and what to discuss with your healthcare team.

Understanding Steroid Therapy and the HPA Axis

When you take steroid tablets for more than a few weeks, your body’s hypothalamic-pituitary-adrenal (HPA) axis reduces its own cortisol output. Cortisol is the hormone your body produces in response to physical stress, such as surgery, injury, or infection. If you stop external steroids abruptly, your adrenal glands may not be able to ramp up cortisol production quickly enough. This can result in:

  • Adrenal insufficiency: Low cortisol levels in the bloodstream.
  • Adrenal crisis: Severe symptoms such as low blood pressure, shock, electrolyte imbalances, and even coma.

Keeping up your prescribed steroid dose ensures that your body has enough cortisol-like activity to handle the stress of an operation.

Risks of Abruptly Stopping Steroids Before Surgery

Stopping steroid tablets before surgery without proper medical guidance can lead to:

  • Blood pressure instability: Cortisol helps maintain blood vessel tone. Without it, you may experience dangerously low blood pressure under anesthesia.
  • Increased risk of shock: Lack of cortisol during surgical stress can precipitate cardiovascular collapse.
  • Delayed wound healing: Steroids support metabolic responses to injury. Sudden withdrawal can impair postoperative recovery.
  • Severe fatigue, muscle pain, nausea, and dizziness: Signs of adrenal insufficiency that can complicate your hospital stay.

These risks underscore why your surgeon and anesthesiologist need to know about any chronic steroid use well before your procedure.

Perioperative Steroid Management: Key Principles

  1. Identify your risk

    • High risk if you’ve taken the equivalent of ≥5 mg prednisone daily for more than 3 weeks.
    • Moderate risk if shorter courses or lower doses.
    • Low risk if your total cumulative dose is minimal or you’ve stopped steroids >3 months ago.
  2. Continue your regular dose

    • Do not stop your maintenance steroid tablets before surgery.
    • Maintain your usual oral dose up until the morning of surgery.
  3. Provide “stress doses” of steroids
    During major surgeries, additional steroids mimic the body’s normal stress response:

    • Minor procedures (e.g., dental work): Often no extra dose needed if you’re on a low maintenance dose.
    • Moderate procedures (e.g., hernia repair): 25 mg hydrocortisone IV before induction, then 50 mg every 8 hours for 24 hours.
    • Major procedures (e.g., open-heart surgery): 100–150 mg hydrocortisone IV before induction, then tapered over 1–3 days.
  4. Tapering after surgery

    • Gradually reduce the stress dose to your preoperative maintenance dose over 2–3 days.
    • Resume oral steroids once you can tolerate fluids and pills.

Your anesthesiologist will plan the exact regimen based on the type of surgery and your existing steroid schedule.

Preoperative Evaluation: What to Discuss

Before any operation, have a detailed conversation with your healthcare providers. Make sure they know:

  • The name and dose of your steroid tablets.
  • How long you’ve been on steroids and any past attempts to taper off.
  • Any symptoms of adrenal insufficiency you may have experienced (e.g., fatigue, muscle weakness, low blood pressure).
  • Other medications, supplements, or herbal remedies you’re taking.

Your surgeon and anesthesiologist will coordinate with your primary care physician or endocrinologist to create a safe perioperative plan.

Monitoring and Postoperative Care

After surgery, your medical team will:

  • Monitor vital signs closely, paying special attention to blood pressure and heart rate.
  • Check for signs of adrenal insufficiency: unexplained fatigue, abdominal pain, or low sodium levels.
  • Adjust steroid dosing based on your clinical status and pain control needs.
  • Plan for a clear taper back to your regular dose, ensuring you don’t exceed or underdose.

Proper monitoring minimizes complications and supports a smoother recovery.

Common Myths and Realities

Myth: “Steroids always increase infection risk, so I should stop them before surgery.”
Reality: While high-dose steroids can suppress immunity, the risks of adrenal crisis and shock outweigh the infection risk if stopped abruptly. Your care team balances both factors.

Myth: “I can skip my morning dose and start again after surgery.”
Reality: Missing even one dose can precipitate adrenal insufficiency under anesthesia. Always take your maintenance dose unless your doctor instructs otherwise.

Practical Tips for Patients

  • Keep a clear, printed list of your medications, including steroid tablets before surgery, and show it to every provider you meet.
  • Ask for a written perioperative steroid plan: doses, timing, and taper schedule.
  • Wear medical identification (bracelet or necklace) indicating chronic steroid use.
  • Stay hydrated and maintain a balanced diet, helping your body cope with surgical stress.
  • Report any unusual symptoms promptly: persistent vomiting, severe dizziness, or extreme fatigue.

When to Seek Help

Surgery-related complications can sometimes be life threatening. If you experience any of the following, seek immediate medical attention:

  • Severe lightheadedness or fainting
  • Persistent low blood pressure despite fluids or medications
  • Uncontrolled nausea and vomiting
  • Confusion or altered mental status

For non-urgent concerns or to learn more about your symptoms, consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker. It’s an easy way to gather information before talking to your healthcare provider.

Working with Your Healthcare Team

No two patients are alike, and perioperative steroid management must be individualized. Always:

  • Schedule a preoperative visit well in advance to review your steroid history.
  • Follow instructions exactly on timing and dosing—never adjust doses on your own.
  • Keep lines of communication open between your surgeon, anesthesiologist, and primary care doctor (or endocrinologist).
  • Ask about emergency protocols if you can’t take oral medication postoperatively.

Final Thoughts

Continuing steroid tablets before surgery is not just a recommendation—it’s a critical safety measure. Abrupt withdrawal can trigger an adrenal crisis, with life-threatening low blood pressure and shock under anesthesia. By maintaining your usual dose, providing appropriate stress doses, and carefully tapering after surgery, you give your body the best chance for a smooth operation and recovery.

Always speak to a doctor about anything that could be life threatening or serious. Proper perioperative planning and close monitoring ensure that your steroid therapy supports rather than jeopardizes your surgical outcome.

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