Cluster headaches can be stopped mid-attack and, in many cases, prevented throughout an entire cluster period. The two fastest-acting treatments for an active attack are high-flow oxygen and injectable triptans, both of which can bring relief within 15 minutes. Longer-term, preventive medications and newer therapies can reduce how many attacks you get or cut a cluster cycle short.
Stopping an Attack With Oxygen
Inhaling pure oxygen is one of the most effective ways to abort a cluster headache once it starts. The standard approach is 100% oxygen at a flow rate of 12 to 15 liters per minute, delivered through a non-rebreathing face mask for 15 to 20 minutes. Most people feel significant relief within that window. Unlike medications, oxygen has virtually no side effects and can be used multiple times a day.
Getting set up requires a prescription for a home oxygen unit with the right type of mask and regulator. If you’ve been diagnosed with cluster headache, ask your doctor specifically about high-flow oxygen. Standard low-flow setups used for other conditions won’t deliver enough oxygen to work. Many people keep a portable cylinder at work or in their car so they can treat an attack wherever it hits.
Triptans for Fast Relief
When oxygen isn’t available or doesn’t fully resolve an attack, injectable sumatriptan is the next line of defense. A 6 mg subcutaneous injection is the most widely studied dose, but many people respond to 3 or 4 mg. Some patients use vials and syringes to self-administer smaller doses, which stretches their supply since the maximum is two 6 mg injections per day.
A nasal spray form of zolmitriptan is another option, particularly if you prefer to avoid needles. At a 5 mg dose, about half of patients in clinical trials achieved relief within 30 minutes. A 10 mg dose brought that number closer to 63%, though the maximum approved single dose is 5 mg. Nasal sprays work more slowly than injections but faster than oral tablets, which are generally too slow to catch a cluster attack that peaks within minutes.
Breaking the Cycle With Steroids
Preventive medications like verapamil can take weeks to reach an effective dose. To bridge that gap, doctors often prescribe a short course of corticosteroids to suppress attacks while the longer-term preventive kicks in. A typical course starts at up to 60 mg of prednisone daily for 5 to 10 days, then tapers down by 5 to 10 mg every three days. This “bridge therapy” can dramatically reduce attack frequency within the first few days and buy time for other treatments to take effect.
Verapamil as a Preventive
Verapamil, a calcium channel blocker originally developed for heart conditions, is the most commonly prescribed preventive for cluster headache. Treatment typically starts at 240 mg daily and increases by 80 mg every two weeks until attacks stop, side effects become an issue, or the dose reaches 960 mg daily. Because higher doses can affect heart rhythm, you’ll need an ECG (heart tracing) at each dose increase to check for any changes. This monitoring sounds cumbersome, but it’s straightforward and makes it safe to push the dose high enough to actually work.
Verapamil doesn’t stop an individual attack. Its purpose is to reduce how many attacks you have per day or per week across the entire cluster period. Most people take it only during their active cluster cycle, though those with chronic cluster headache may stay on it year-round.
Monthly Injections for Episodic Clusters
Galcanezumab (sold as Emgality) is the first and currently only FDA-approved preventive specifically for episodic cluster headache. It works by blocking a protein called CGRP that plays a central role in cluster attacks. The dosing involves three injections of 100 mg each (300 mg total) given at the start of a cluster period, then 300 mg monthly until the period ends.
In the pivotal trial, people receiving galcanezumab had an average reduction of 8.7 attacks per week over the first three weeks, compared to 5.2 for placebo. By week three, about 71% of treated patients had cut their weekly attack frequency by at least half. It’s not a cure, but for people whose cluster periods are predictable, starting injections early can significantly blunt the cycle.
Vagus Nerve Stimulation
A handheld device called gammaCore stimulates the vagus nerve through the skin of your neck. It’s non-invasive, requires no implant, and is FDA-cleared for cluster headache. You hold it against your neck during an attack, and it delivers mild electrical pulses.
In pooled clinical trials of episodic cluster headache, about 39% of patients using the device responded to their first treated attack, compared to 12% using a sham device. Across all attacks treated, 24% were pain-free at 15 minutes versus 7% with sham. The device also shortened attack duration by an average of 30 minutes. These numbers are more modest than oxygen or triptans, but for people who need additional options or want to reduce medication use, it’s a useful tool to add to the mix.
Melatonin as a Supplement
Melatonin is sometimes used alongside standard preventives. Cluster headache has a strong circadian component, with attacks often striking at the same time each night, and melatonin’s role in regulating sleep-wake cycles may be relevant. The doses used for cluster prevention are much higher than typical sleep doses, ranging from 10 to 25 mg taken in the evening. Side effects at these levels are generally mild, which is why many headache specialists feel comfortable recommending it even though the evidence is less robust than for verapamil or galcanezumab.
Procedures for Refractory Cases
When medications and devices aren’t enough, stimulation of the sphenopalatine ganglion (a nerve cluster behind your cheekbone) is an option for chronic cluster headache. This involves a small implanted device that delivers electrical stimulation during an attack. In a randomized controlled trial of patients whose attacks weren’t controlled by preventive treatments, 62% of stimulation-treated attacks achieved pain relief at 15 minutes, compared to 39% with a sham control. The implantation carries surgical risks, including rare complications like infection, so it’s reserved for people who haven’t responded to other approaches.
Avoiding Known Triggers
During an active cluster period, alcohol is the single most reliable trigger. Even a small amount can provoke an attack within minutes. Most people with cluster headache learn to avoid alcohol entirely during their bouts, then find they can drink normally during remission without consequence. Smoking is also associated with triggering attacks, and maintaining a consistent sleep schedule helps, since attacks frequently occur during specific phases of sleep. Keeping a headache diary to identify your personal triggers, including specific foods, strong smells, or altitude changes, gives you more control between medical treatments.
Episodic vs. Chronic: Why It Matters
About 80 to 90% of people with cluster headache have the episodic form, meaning their attacks come in bouts lasting one week to one year, separated by remission periods of at least three months. The remaining 10 to 20% have chronic cluster headache, where attacks persist for more than a year without a three-month break. The distinction matters because some treatments, like galcanezumab, are only approved for the episodic form, and chronic cluster headache often requires more aggressive combinations of preventives, nerve stimulation, or procedures.
If your cluster periods are getting longer, your remissions shorter, or your attacks less responsive to treatments that used to work, bring that up with your doctor. These shifts can change which treatments make the most sense.