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
Emgality
Sumatriptan vs. Emgality Dosage
Sumatriptan
Emgality
| 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 |
| STAGE | DOSE | WHEN |
| Starting dose | 240 mg | Day 1 |
| Maximum dose | 300 mg once monthly | If needed |
| Dose changes | 2 increases | As tolerated |
Sumatriptan
| 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
| 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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