Eletriptan Drug Profile

What is Eletriptan?

Eletriptan is a prescription medication belonging to a class of drugs called triptans, specifically designed to treat migraine headaches. It is a selective serotonin receptor agonist that works by targeting specific receptors in the brain and blood vessels. Eletriptan is used for the acute treatment of migraine attacks in adults, helping to relieve both the headache pain and associated symptoms.

Uses

• Acute migraine treatment: Primary indication for treating migraine headaches with or without aura in adults
• Migraine-associated nausea and vomiting: Helps reduce these common symptoms that accompany migraine attacks
• Light and sound sensitivity: Alleviates photophobia and phonophobia associated with migraines
• Severe headache episodes: Effective for moderate to severe migraine pain that interferes with daily activities
• Functional restoration: Helps patients return to normal activities by reducing migraine disability

How it works

Eletriptan works by binding to specific serotonin receptors (5-HT1B and 5-HT1D) found in blood vessels and nerve terminals in the brain. This binding causes constriction of dilated cranial blood vessels and blocks the release of inflammatory substances that contribute to migraine pain. The medication also interrupts pain signals transmitted through the trigeminal nerve pathway, which is central to migraine pathophysiology.

Side effects

Common side effects:

• Chest tightness or pressure
• Dizziness or drowsiness
• Nausea
• Dry mouth
• Fatigue or weakness
• Tingling or numbness in fingers or toes
• Throat tightness
• Flushing or warm sensations

Serious side effects requiring immediate medical attention:

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• Chest pain or heart attack symptoms
• Stroke symptoms (sudden numbness, confusion, vision changes)
• Severe allergic reactions (difficulty breathing, swelling of face or throat)
• Irregular heartbeat or palpitations
• Severe abdominal pain or bloody diarrhea

Warnings and precautions

• Cardiovascular contraindications: Should not be used by patients with heart disease, uncontrolled high blood pressure, or history of stroke, as it can cause blood vessel constriction
• Pregnancy considerations: Classified as pregnancy category C; should only be used when potential benefits outweigh risks, and safety during breastfeeding is not established
• Liver impairment: Dose adjustment may be necessary in patients with severe hepatic impairment, as the drug is metabolized by the liver
• Age restrictions: Not recommended for patients over 65 years or under 18 years due to limited safety and efficacy data
• Overuse headaches: Should not be used more than 10 days per month to avoid medication overuse headaches

Interactions

• Other triptans or ergot alkaloids: Increased risk of vasospasm; allow 24-hour interval between doses
• MAO inhibitors: Can increase eletriptan levels and toxicity; contraindicated within 2 weeks of MAO inhibitor use
• Selective serotonin reuptake inhibitors (SSRIs): May increase risk of serotonin syndrome when combined
• Serotonin-norepinephrine reuptake inhibitors (SNRIs): Similar serotonin syndrome risk as with SSRIs
• CYP3A4 inhibitors (ketoconazole, clarithromycin): Can increase eletriptan blood levels and side effects
• Propranolol: May increase eletriptan plasma concentrations
• St. John’s wort: May reduce eletriptan effectiveness by inducing liver enzymes
• Triptophan supplements: May increase serotonin levels and risk of adverse effects

Check interactions with the GMJ Interaction Checker

Dosage

The typical adult dose for eletriptan is 20 mg or 40 mg taken orally at the onset of migraine symptoms. If the headache returns or only partially resolves, a second dose may be taken after at least 2 hours, but the maximum daily dose should not exceed 80 mg. The medication should be taken as early as possible during a migraine attack for optimal effectiveness. Patients should not exceed 40 mg in a 24-hour period without medical supervision. Dosage adjustments may be necessary for patients with liver impairment or those taking certain interacting medications. Always consult with a healthcare provider to determine the appropriate dosage based on individual medical history and response to treatment.

Sources: FDA DailyMed drug labels (public domain), BNF, WHO Essential Medicines List. This article is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting or stopping any medication.

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