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Sumatriptan is the oldest and best-studied triptan for acute migraine attacks. What matters is the right timing of the dose (early in the headache phase, not during the aura) and keeping to the maximum amounts – so the attack is effectively aborted without risking overuse headache.
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Sumatriptan is an acute medication, not a painkiller for long-term use. Taking it too often can itself trigger headaches – stick to the maximum amounts and agree the use with your practice. Sumatriptan (brand name Imigran®) was the first triptan and is still the best-studied medication in this group. Triptans act specifically against a migraine attack – not preventively, but acutely, as soon as the headache phase begins. In doing so, sumatriptan relieves not only the pain but also accompanying symptoms such as nausea and sensitivity to light.
| Property | Details |
|---|---|
| Active ingredient | Sumatriptan |
| Brand name | Imigran® |
| ATC code | N02CC01 |
| Drug class | Triptan – selective 5-HT₁ receptor agonist |
| Formulation | Tablets 50/100 mg, nasal spray 10/20 mg, prefilled syringe 6 mg |
| Timing | Acutely at the start of the headache phase (not during the aura) |
| Standard dose | 50–100 mg tablet per attack |
| Prescription status | Yes (50 mg partly available from the pharmacy without a prescription) |
| Note | On no more than 10 days per month, to avoid medication-overuse headache |
During a migraine attack, blood vessels around the meninges dilate and inflammation-promoting messenger substances are released. Sumatriptan acts specifically at certain serotonin docking sites (the 5-HT₁B/1D receptors): it narrows the dilated vessels again and dampens the release of the pain messengers. In this way it tackles the migraine at its source – unlike classic painkillers, which only slow pain transmission in a general way.
This is exactly why sumatriptan helps specifically with migraine and with certain forms of cluster headache, but not with ordinary tension headaches. Important to understand: sumatriptan does not prevent attacks. It is purely an acute medication that aborts the individual attack.
The right moment is decisive for its effect. Take sumatriptan early in the headache phase, as soon as the typical migraine headache sets in – the earlier, the better it works. But: not during the aura (visual disturbances, tingling before the pain). Taken during the aura phase, sumatriptan works less well; wait until the headache begins.
| Situation | Recommendation |
|---|---|
| Start of the headache phase | 50–100 mg tablet as early as possible |
| During the aura | Do not take yet – wait for the headache |
| No effect after the 1st dose | No 2nd dose for the same attack |
| Recurrence after an initially good effect | 2nd dose possible at the earliest after 2 hours |
| Severe nausea / vomiting | Nasal spray or prefilled syringe instead of a tablet |
If the first dose has no effect at all, a second dose for the same attack achieves nothing. What generally applies with a missed or ineffective dose is explained in the guide Forgotten medication.
brite helps you document your attacks and take sumatriptan within the right window.
Sumatriptan comes in several formulations that differ mainly in the onset of action. Anyone who quickly develops nausea and vomiting benefits from a nasal spray or prefilled syringe, because they bypass the stomach. The prefilled syringe works the fastest and is the reserve for very severe or rapidly developing attacks.
| Form | Onset of action | Suitable for |
|---|---|---|
| Tablet (50/100 mg) | approx. 30–60 minutes | Standard, well-plannable attacks |
| Nasal spray (10/20 mg) | approx. 15 minutes | Nausea/vomiting, faster need |
| Prefilled syringe (6 mg s.c.) | approx. 10 minutes | Very severe attacks, cluster headache |
Which form is right depends on how your attacks unfold. Many start with the tablet and keep a nasal spray as a reserve for days with early nausea. You make the decision together with your doctor.
A typical phenomenon with triptans is the recurrence headache (recurrence): the attack improves well at first but returns after a few hours as the active ingredient wears off. A second dose may then be taken – at the earliest two hours after the first. This is normal and not a sign that the medication is not working.
More dangerous is the gradual slide into a medication-overuse headache. In people who reach for acute medications too often, these can themselves trigger a persistent headache. That is why there is a clear limit:
| Rule | Limit |
|---|---|
| Triptan dosing days per month | no more than 10 days |
| Painkillers in total (incl. triptans, NSAIDs) | on fewer than 15 days/month |
| Maximum tablet dose per day | as a rule 300 mg |
| Interval between two doses | at least 2 hours |
Most side effects are harmless and subside on their own. Typical are temporary abnormal sensations that arise from the vasoconstrictive effect. A feeling of pressure or tightness in the chest and throat is usually harmless, but must be medically clarified the first time it occurs.
| Side effect | Frequency | What to do? |
|---|---|---|
| Tiredness, dizziness, sensation of warmth | Common | Usually harmless, subsides on its own |
| Tingling, heaviness in arms/legs | Common | Temporary; mention it if it recurs often |
| Pressure/tightness in chest or throat | Uncommon | Always have it medically clarified the first time |
| Persistent chest pain, shortness of breath | Rare | Emergency – call 112 immediately |
Sumatriptan intervenes in the serotonin balance. Combinations with other serotonergic substances increase the risk of a rare but serious serotonin syndrome. Check your combinations in the interaction check.
| Substance / medication | Interaction | Recommendation |
|---|---|---|
| MAO inhibitors | Sumatriptan level rises sharply | Contraindicated – do not combine |
| Other triptans / ergotamines | Increased vasoconstriction | Keep at least 24 hours apart |
| SSRIs/SNRIs (antidepressants) | Risk of serotonin syndrome | Only under medical supervision, watch for signs |
| St John's wort | Additional serotonergic effect | Clarify medically before taking |
Against the accompanying nausea, the combination with Metoclopramide is common and sensible; with mild attacks, Ibuprofen can also be an alternative or supplement.
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