What happens if you miss a steroid dose?
Missing a dose of steroid replacement can leave you under-replaced. What you do next depends on how long ago the dose was due, how you feel, and the plan from your endocrine team. If you are vomiting, confused, or collapsing, treat it as an emergency.
- Follow the missed-dose advice on your steroid card or clinic letter — plans differ by person.
- If you are unwell and cannot keep tablets down, you may need an emergency injection — know where it is and how to use it.
- Do not double up unless your specialist has told you that is safe for your situation.
- Seek urgent help if you have signs of adrenal crisis (severe weakness, vomiting, dizziness, confusion).
- After any missed dose or illness, note what happened for your next appointment.
How MyAddi helps
MyAddi keeps your medication schedule visible and links to SML emergency steps designed for stressful moments — alongside symptom tracking you can share with your care circle.
Frequently asked questions
- Is one missed dose always an emergency?
- Not always, but it can be serious if you are already unwell or miss multiple doses. Use your personalised plan and call your team or NHS 111 when unsure.
- What is an adrenal crisis?
- An adrenal crisis is a medical emergency where the body lacks enough cortisol. Symptoms can include severe fatigue, vomiting, abdominal pain, low blood pressure, and confusion. UK guidance is to seek emergency help.
- How can I prepare before a miss happens?
- Keep your emergency card, injection kit, and sick-day rules accessible. Apps that surface this information quickly can help carers act calmly.
Sources
This guide is for general information only. It does not replace advice from your GP, endocrine team, or emergency services. If you think you are having an adrenal crisis, call 999.