Sumatriptan is a migraine treatment belonging to a class of drugs known as ‘triptans’, also known as 5-hydroxytryptamine receptors. It is also referred to as its brand name, Imigran.
Sumatriptan is a migraine treatment belonging to a class of drugs known as ‘triptans’, also known as 5-hydroxytryptamine receptors. It is also referred to as its brand name, Imigran. Sumatriptan is available as a 50mg and 100mg strength. In the UK, you can buy sumatriptan over the counter in the 50mg strength, but you are limited to two tablets. If you require more than two tablets or the 100mg strength, you require a prescription from a doctor. It is available as a tablet or nasal spray (the faster acting option). This medication is only licensed to treat a migraine once it has started and cannot prevent a migraine.
Sumatriptan tablets work by temporarily narrowing blood vessels in the brain, preventing pain signals from being sent. It also works to inhibit the release of natural chemicals which cause migraine symptoms such as pain and nausea. Sumatriptan will only work to relieve a migraine once it has started and does not work to prevent or reduce the frequency of migraines.
Sumatriptan tablets usually work within 30-60 minutes and the nasal spray and injections usually work within 15 minutes. Whilst these tablets are effective, there is no guarantee that they will work every time. If it is not effective for you, there are alternatives that belong to the same class of drugs that can be effective.
Sumatriptan is available as a 50mg and 100mg tablet. The recommended starting dose is usually 50mg, and 100mg is used where patients do not experience full relief with 50mg.
Take one 50mg or 100mg with a glass of water at the onset of a migraine. You should swallow tablets whole and not crush them, although some tablets that are scored down the middle can be split in those that have trouble swallowing tablets. Some people experience ‘aura’ (visual disturbances, tingling sensation, dizziness, difficulty speaking, loss of consciousness) before a migraine attack. You should not take a tablet if you experience aura without a migraine. If you experience relief with sumatriptan, you can take another tablet after 2 hours. However, if the first dose does not help, do not take another tablet.
You can take sumatriptan with or without food and you should avoid crushing the tablet.
The maximum dose of sumatriptan within a 24-hour period is 300mg. Do not exceed this dose as it may cause narrowing of the blood vessels which can lead to heart complications.
As with all medication, sumatriptan is associated with side effects such as drowsiness.
Common side effects of sumatriptan typically affect up to 10% of users. They include:
Side effects are temporary and usually pass. If side effects continue or get worse (especially difficulty breathing), seek urgent medical attention.
The nasal spray can have the same effects as the tablets and can also cause the following:
You should not take sumatriptan tablets if you are taking certain medication. These include:
You should not use sumatriptan if you:
Sumatriptan can cause heart complications in a small number of people. If you fall into the following categories, you should discuss the use of sumatriptan with your doctor:
If you fall into two of these categories, you may need to have your heart function tested, as you are at a higher risk of developing heart disease. This can cause complications.
If you have an allergy to antibiotics known as sulphonamides, you may be allergic to sumatriptan.
The following symptoms are typical of an allergic reaction, and if you develop these symptoms after taking sumatriptan, you may be allergic. You should seek urgent medical attention if you develop the following symptoms:
If you are pregnant and wish to take sumatriptan, you should discuss this with your doctor. There is limited research that looks at the safety of sumatriptan in pregnant women. Your doctor will weigh up the benefits, against the potential negative outcomes.
Sumatriptan is present in breast milk and you should leave a 12-hour gap between taking sumatriptan and breastfeeding. You should contact your doctor and let them know if you wish to take this drug when breastfeeding.
Alcohol does not affect sumatriptan and how it works. However, alcohol can trigger migraines and may make them worse, so you should avoid alcohol when suffering from a migraine.
Whilst all of our content is written and reviewed by healthcare professionals, it is not intended to be substituted for or used as medical advice. If you have any questions or concerns about your health, please speak to your doctor.