Sumatriptan vs. Emgality

See how Sumatriptan and Emgality compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Sumatriptan treats a migraine attack after it starts, while Emgality is injected monthly to help prevent migraines before they begin.

  • Sumatriptan is a low-cost tablet taken per attack, while Emgality is a pricier biologic injection given on a fixed monthly schedule.

  • Emgality is also FDA-approved for episodic cluster headache, a use sumatriptan tablets do not have.

Sumatriptan vs. Emgality Drug Summary

Sumatriptan

Sumatriptan is a triptan that treats a migraine attack once it starts, easing pain by narrowing blood vessels and blocking pain signals in the brain. It is taken as an oral tablet in doses of 25 mg, 50 mg, or 100 mg, used one time per attack. It is not intended to prevent migraines from occurring.

Emgality

Emgality is a CGRP-blocking monoclonal antibody given as a once-monthly injection to prevent migraines before they start. It is also FDA-approved for episodic cluster headache, using a separate, higher dose schedule. It does not relieve an attack that has already begun.

Sumatriptan vs. Emgality Side Effects

Sumatriptan

Most common
Paresthesia (≥2%)
Warm/cold sensation (≥2%)
Chest pain/tightness/pressure (≥2%)
Neck/throat/jaw pain/tightness/pressure (≥2%)

Emgality

Most common
Injection site reactions (up to 18%)
Injection site pain (10.1% to 11.6%)
Constipation (1.0% to 1.5%)
Vertigo (0.7% to 1.2%)

Sumatriptan vs. Emgality Dosage

Sumatriptan

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 25 mg once per attack At the start
Maximum dose 100 mg once per attack If needed
Dose changes 2 increases As tolerated

Emgality

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 240 mg Day 1
Maximum dose 300 mg once monthly If needed
Dose changes 2 increases As tolerated

Sumatriptan vs. Emgality Indications

Sumatriptan

Sumatriptan is FDA-approved for the acute treatment of migraine with or without aura in adults. It is taken as needed when a migraine attack starts, not on a fixed schedule. It is not approved to prevent migraines or to treat cluster headache in tablet form.

  • Acute treatment of migraine attacks

  • Works within the first signs of a migraine

  • Available as tablet, injection, or nasal spray

  • Taken only when an attack occurs

Emgality

Emgality is FDA-approved for the preventive treatment of migraine in adults and for episodic cluster headache. It is injected once a month on a fixed schedule, regardless of whether a migraine is happening. It does not treat a migraine attack already underway.

  • Preventive treatment for chronic and episodic migraine

  • Treats episodic cluster headache

  • Given on a fixed monthly schedule

  • Not used for an active migraine attack

Sumatriptan vs. Emgality Pros and Cons

Sumatriptan

Sumatriptan has decades of real-world use and remains one of the more affordable migraine options, especially as a generic. It works quickly for an attack already in progress but must be taken again for each new attack, and carries cardiovascular warnings that rule it out for some patients.

Pros

  • Roughly $12 to $185 per month before coupons

  • Works within about an hour for many people

  • Available as tablet, injection, or nasal spray

  • Decades of clinical use and safety data

Cons

  • Must be taken again for each new attack

  • Not approved to prevent migraines

  • Contraindicated with heart disease or stroke history

  • Risk of serotonin syndrome with other serotonergic drugs

Emgality

Emgality offers a set-and-forget approach, needing only one injection a month to reduce how often migraines occur. It costs substantially more than sumatriptan and does not help during an active attack, but it is also approved for episodic cluster headache.

Pros

  • Only one injection needed per month

  • Reduces migraine frequency over time

  • Also approved for episodic cluster headache

  • No boxed warning or cardiovascular contraindication

Cons

  • Roughly $650 to $900 per month before insurance

  • Does not stop a migraine already in progress

  • Injection site reactions are common

  • Risk of worsening Raynaud's phenomenon

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