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Sumatriptan is a migraine medicine that comes in several forms, including tablets, nasal spray and injection. It is not suitable for everyone, particularly people with heart or circulation problems.
Who should tell their doctor first?
- People with heart problems, including coronary heart disease, angina, an irregular heartbeat or a past heart attack
- People with circulation problems in their legs
- People who have had a stroke or mini stroke
- People with liver problems or seizures
- People who have high blood pressure
- People who are pregnant, trying to get pregnant or breastfeeding
- People who smoke heavily or use nicotine replacement
What are the common side effects?
Nausea or vomiting, dizziness, tiredness, flushing and feeling hot or cold can occur. The nasal spray can cause nose or throat irritation and a bad taste.
When should I get urgent help?
Stop and contact a doctor urgently for continued or increasing tightness, tingling, heaviness, warmth or cold in your face, arms, legs or chest. Seek emergency help for severe chest pain or tightness, especially with breathlessness, faintness or sweating. Call your local emergency number (000 in Australia) for a severe allergic reaction.
Doses and formulations vary. Follow your prescriber, pharmacist and the leaflet supplied with your exact medicine. In Australia, call 000 for a medical emergency or the Poisons Information Centre on 13 11 26 for suspected poisoning or overdose. Outside Australia, use your local emergency and poison-information services.
Source: NHS: Who can and cannot take sumatriptan and NHS: Side effects of sumatriptan. General education does not replace individual medical advice. Updated November 2026.
Read more in our Health Guides. For website or catalogue questions, contact support; urgent medical concerns need a healthcare service.