Migraine Medications - Triptans and Migraine Prophylaxis
Migraine is far more than "just a bad headache" — it is a complex neurological disorder involving brainstem activation, cortical spreading depression, trigeminovascular system inflammation, and central pain sensitisation. Affecting approximately 1 in 7 people worldwide (and twice as many women as men), migraine is the 2nd leading cause of disability in adults under 50 according to the Global Burden of Disease Study. Despite this scale, many sufferers receive incorrect or insufficient treatment, often labelled as "stress" or "tension headache".
Modern migraine treatment splits into two parallel strategies: acute (abortive) therapy to stop a migraine in progress, and preventive (prophylactic) therapy to reduce the frequency, severity, and duration of attacks. Acute treatment is best taken at the earliest sign of an attack — delay reduces effectiveness. Preventive therapy is appropriate when migraines occur 4+ days per month, when acute medications fail or are contraindicated, or when individual attacks cause significant disability or require ER visits.
This catalogue covers triptans (the cornerstone of acute migraine therapy), anticonvulsants used for prevention (Depakote / divalproex sodium), and calcium channel blockers for migraine prevention with vestibular features (Sibelium / flunarizine). For chronic migraine and treatment-refractory cases, modern CGRP receptor antagonists (erenumab, fremanezumab, galcanezumab, ubrogepant, rimegepant) are increasingly accessible but typically managed by neurology specialists.
🧠 Conditions This Category Treats
Migraine without aura (the most common form, ~70% of cases) features moderate-to-severe throbbing headache typically unilateral, lasting 4-72 hours, often with nausea, vomiting, light and sound sensitivity. Migraine with aura (~30%) adds reversible neurological symptoms preceding or accompanying the headache — most often visual (flashing lights, zigzag lines, blind spots) but also sensory (tingling, numbness), language, or motor disturbance. Hemiplegic migraine and basilar migraine are rare severe variants requiring specialist management.
Beyond classic migraine, this category supports chronic migraine (15+ headache days per month for 3+ months, with migraine features on 8+ of those days), menstrual migraine (linked to hormonal cycles, often poorly responsive to standard triptans), vestibular migraine (vertigo with or without typical headache features — where Sibelium / flunarizine is particularly useful), and medication overuse headache (paradoxically caused by frequent use of acute medications — requires withdrawal and prevention strategy).
Migraine has substantial comorbidities: depression and anxiety (3-4 times more common), fibromyalgia, irritable bowel syndrome, restless legs syndrome, sleep disorders, and cardiovascular disease. Migraine with aura specifically increases risk of stroke (especially in young women on estrogen-containing contraceptives or who smoke), and CGRP-related vasodilation may contribute to cardiovascular risk in some patients. Comprehensive migraine management addresses lifestyle factors, sleep regularity, hydration, dietary triggers, and stress management alongside pharmacotherapy.
💊 How Modern Migraine Treatment Works
Triptans — sumatriptan (Imitrex), rizatriptan (Maxalt), zolmitriptan, naratriptan, eletriptan, almotriptan, frovatriptan — are serotonin 5-HT 1B/1D receptor agonists. They act on cranial blood vessels (causing constriction of dilated meningeal vessels) and on the trigeminovascular system to inhibit pro-inflammatory neuropeptide release. The net effect is rapid reduction of pain and associated symptoms in 60-70% of users within 2 hours. Each triptan has a slightly different profile: sumatriptan has the most evidence and multiple formulations (oral, nasal spray, injection); rizatriptan often acts faster orally; frovatriptan has the longest half-life and is useful for menstrual migraine preventive courses.
Divalproex sodium (Depakote) is an anticonvulsant with FDA approval for migraine prevention. The mechanism involves enhanced GABA activity and modulation of glutamate signalling. At 500-1000 mg daily it reduces migraine frequency by approximately 40-50% in responders. Side effects include weight gain, hair loss, hand tremor, and rarely hepatotoxicity. Contraindicated in pregnancy (high teratogenicity, especially neural tube defects). Topiramate is another widely-used antiseizure preventive with similar efficacy and different side effects (weight loss, cognitive slowing, paresthesias).
Flunarizine (Sibelium) is a selective calcium channel blocker with antihistaminic and antidopaminergic activity. It reduces migraine frequency by approximately 50% in responders with a particular role in vestibular migraine, paediatric migraine, and migraine with aura. Common side effects include sedation, weight gain, and rarely depression or extrapyramidal symptoms with long-term use. Dosed 5-10 mg at bedtime; typically used for 6-12 months then reassessed. Other classes used for migraine prevention but covered in other categories: beta-blockers (propranolol / Inderal, found in Blood Pressure), tricyclic antidepressants (amitriptyline / Elavil, found in Antidepressants), and now monoclonal CGRP antibodies for refractory cases.
💊 Drug Classes in This Category
| Class | Role | Examples |
|---|---|---|
| Triptans (5-HT 1B/1D agonists) | Acute migraine attack; effective within 30-60 min | Imitrex (sumatriptan), Maxalt (rizatriptan) |
| Anticonvulsants (prevention) | Migraine prevention when 4+ days/month or severe attacks | Depakote (divalproex sodium) |
| Calcium channel blockers (prevention) | Vestibular migraine, paediatric and aura-dominant migraine | Sibelium (flunarizine) |
✅ How to Choose
- 🥕 Occasional moderate-severe migraine attacks → Imitrex (sumatriptan) 50-100 mg orally at onset. Repeat after 2 hours if needed (max 200 mg/day).
- ⏱ Need faster acting triptan → Maxalt (rizatriptan) 5-10 mg as orally disintegrating tablet works fast. Better tolerability than higher-dose sumatriptan in some users.
- 📊 4+ migraine days per month or severely disabling attacks → preventive therapy needed. Depakote 500 mg twice daily; titrate to effect or use beta-blocker / topiramate / amitriptyline alternatives.
- 🧐 Vestibular migraine (vertigo) or migraine with aura → Sibelium (flunarizine) 5-10 mg at bedtime. Especially useful in children, women with severe aura, and refractory cases.
- 🌹 Menstrual migraine → mini-prophylaxis with frovatriptan or long-acting NSAID for 5 days perimenstrually; combined hormonal options under specialist guidance.
- 🤰 Pregnancy → paracetamol first-line for acute treatment. Depakote contraindicated. Triptans (sumatriptan) considered relatively safe but reserved for severe attacks; specialist input.
❓ Frequently Asked Questions about Migraines
How quickly should I take my triptan?
As early as possible in the attack — ideally during the prodrome (yawning, mood change, neck stiffness) or aura, definitely within the first 30 minutes of headache onset. Early treatment is dramatically more effective. Do not "wait and see" — once central sensitisation occurs, triptans work less well.
My first triptan did not work. Should I give up on triptans?
No — about 30% of non-responders to one triptan respond to another. Try at least 2 attacks of each before switching. Also consider: was the dose adequate, was it taken early enough, was the diagnosis correct (cluster headache, hemicrania continua, secondary headache all respond differently). Combination of triptan + naproxen at onset is also more effective than either alone.
How long should I take preventive therapy?
If preventive therapy reduces attack frequency by at least 50%, continue for 6-12 months at minimum, then gradually attempt withdrawal. Many patients maintain reduced frequency after stopping. Restart preventive if attacks return. Continuous preventive therapy is reasonable for chronic migraine and those with severe disability.
Can I use birth control if I have migraine?
Migraine without aura: combined hormonal contraceptives are usually safe. Migraine with aura: combined estrogen-containing pills are typically contraindicated because of increased stroke risk — use progestin-only pills, IUD, or non-hormonal methods. Discuss with your prescriber before starting any hormonal method.
Do common migraine triggers really matter?
For many people, yes — identifiable triggers include skipped meals, dehydration, alcohol (especially red wine, beer), aged cheese, MSG, caffeine withdrawal, sleep changes, weather changes, hormonal cycles, bright/flashing lights, strong smells, and stress. Keep a headache diary for 6-8 weeks to identify your triggers. Lifestyle regularity (consistent sleep, hydration, meals) is among the most effective preventive interventions.
What about Botox or the new CGRP drugs?
For chronic migraine (15+ headache days/month): OnabotulinumtoxinA (Botox) injections every 12 weeks reduce frequency. Monoclonal CGRP antibodies (erenumab, fremanezumab, galcanezumab, eptinezumab) are monthly or quarterly injections specifically designed for migraine prevention — well-tolerated and effective. Oral gepants (ubrogepant, rimegepant, atogepant) treat acute attacks (rimegepant also for prevention). These are typically prescribed by neurology specialists.
🩺 When to See a Healthcare Provider
Emergency evaluation for: sudden severe "thunderclap" headache (rule out subarachnoid haemorrhage), headache with fever and neck stiffness (meningitis), headache with focal neurological deficits lasting more than typical aura, headache after head trauma, new headache pattern after age 50, headache that progressively worsens over days-weeks, headache with vision changes or jaw pain in older adults (giant cell arteritis).
Routine neurology referral for: chronic migraine, treatment-refractory attacks, frequent ER visits, suspected medication overuse headache, or migraine with significant aura. Annual review covers medication effectiveness, side effects, comorbidities (depression, sleep, lifestyle), and decision about whether to step up or step down preventive therapy. Inform every prescriber about your migraine medications — triptans interact with SSRIs (serotonin syndrome) and other agents.