CGRP Migraine Medications Compared: Who Qualifies and How They Differ

You’ve probably seen the ads for new migraine drugs, and maybe a friend has asked whether you’ve tried one. The pills and injections in question target CGRP, a molecule involved in migraine pain. These CGRP medications are the first class designed specifically for migraine rather than borrowed from other conditions. Some stop an attack, some prevent attacks, and a couple can do both.

Which drug fits depends on how often your attacks happen, what they look like, what you’ve already tried, and what else is going on with your health. A neurologist or headache specialist usually prescribes them after reviewing your attack history, earlier therapies, and possible contraindications.

This article is for general education and isn’t a substitute for medical advice. Medication choices depend on your health history, so please talk with your neurologist before you start, switch, or stop anything.

What CGRP Is and Why Blocking It Helps

CGRP stands for calcitonin gene-related peptide. The molecule is naturally present in the nervous system and helps transmit pain signals. During a migraine attack, nerve endings release more of it. It can widen blood vessels, stir up inflammation around the meninges (the membranes that cover the brain), and make pain pathways more sensitive. That mechanism is why CGRP migraine treatment looks so different from older options.

A question we hear all the time is “Is Nurtec a triptan?” It isn’t. Nurtec belongs to the gepants class, which blocks the CGRP receptor. Triptans work mainly through serotonin receptors and can constrict blood vessels, so they aren’t suitable for people with certain cardiovascular conditions. CGRP inhibitors interfere in two main ways. Monoclonal antibodies bind the CGRP molecule itself (one of them binds the receptor instead), while gepants are small tablets that block the receptor. Either way, the signal behind migraine pain gets weaker. Neither type removes the things that set attacks off, so it still pays to know your migraine triggers.

Acute Treatment: Taken When an Attack Starts

Not every migraine drug is taken on a schedule. Gepants can stop an attack that has already begun. They may suit people who can’t take triptans because of cardiovascular conditions, or who don’t get enough relief from them. They don’t guarantee that every attack will stop, and they come with their own limits and side effects. Two names come up most:

• Ubrelvy (ubrogepant) is a swallowed tablet approved for the acute treatment of migraine in adults. It isn’t used for regular prevention.
• Nurtec (rimegepant) is also a gepant and dissolves on the tongue. Unlike Ubrelvy, it has two uses in adults: its prescribing information lists acute treatment and prevention of episodic migraine.

Nurtec vs Ubrelvy mostly comes down to indication and how you want to use the drug. If you’d like one medicine that covers both treatment and prevention, Nurtec is the one in this pair with both approvals. If you’d rather keep prevention separate, Ubrelvy is a good fit. The two differ in how they’re absorbed and how long they stay in the body, so the speed and length of relief vary from person to person, and a few attacks will show you which one suits you. Both labels also spell out interaction limits. Ubrelvy, for example, can’t be combined with strong CYP3A4 inhibitors, a group that includes some antifungal and antibiotic drugs, so list everything you take, even short courses.

Timing matters too. Attack medicines generally work best once the headache starts, not hours into it. Using any attack medicine on too many days a month can backfire, so count the days you reach for Ubrelvy, Nurtec, or a triptan, and bring that count to your visit.

Prevention: Monthly Injections and Daily Tablets

If attacks come often, your doctor may offer prevention as well as drugs to stop them. The aim is fewer headache days, milder attacks, and less need for attack medicine. An American Headache Society position statement update says CGRP inhibitors can be considered a first-line option for migraine prevention, alongside older choices. Preventive options come in three forms:

• Injections. These are monoclonal antibodies given under the skin, either monthly or every three months, depending on the product. Emgality (galcanezumab) is a monthly example, and it’s also approved for episodic cluster headache.
• Tablets. Qulipta (atogepant) is a daily oral gepant for preventing episodic or chronic migraine in adults, with no needles involved. Nurtec can also be used to prevent episodic migraine, on a schedule your doctor sets.
• Infusions. One antibody is given through an IV about every three months, which suits people who dread self-injecting.

Doctors usually judge the result after several months by looking at changes in your headache diary. Switching isn’t a failure either. Plenty of people try one CGRP inhibitor and move to another after a few months, and the different forms leave room to adjust.

CGRP or Botox? An Honest Comparison

Both approaches can reduce attack frequency, though they differ in mechanism, indications, and how they’re given. Botox is used to prevent chronic migraine, meaning headaches on at least 15 days a month, and our article on Botox for migraines explains what a session involves. CGRP medications can also treat less frequent attacks, depending on the product and its indication. In practice:

• Botox is injected into specific areas of the head and neck during an office visit, usually repeated about every 12 weeks. Temporary soreness is common, and an eyelid can droop for a while.
• CGRP antibodies can often be injected at home after your doctor shows you how, monthly or quarterly. Injection site reactions are the usual complaint.
• CGRP tablets are taken by mouth, with no needle at all, though stomach side effects can be the trade-off.

No single treatment wins for everyone. If you’re comfortable with home injections or pills, CGRP medications may be more convenient. Botox remains an important option for chronic migraine, especially when it’s already helping. Some people use both, and your neurologist can tell you whether that makes sense for you.

Who Qualifies, and What Insurance Usually Asks For

Access to CGRP medications takes more than wanting to try something new. A doctor must confirm the diagnosis, assess how often attacks occur, and learn what you’ve already tried. In the United States, insurers often want proof of earlier treatment before they agree to pay. Expect to be asked for:

• Diagnosis. A confirmed migraine diagnosis from a medical professional. Describe the pain, the symptoms that come with it, how long attacks last, and how much they limit your day.
• History. Documentation of traditional preventive medicines you tried and why you stopped them.
• Diary. A migraine headache diary showing headache days, attack length, severity, and the medicines you used. It helps with approval and with judging whether treatment is working.
• Approval. Coverage often requires prior authorization. Your neurologist’s team sends your records and the reasoning for the prescription.
• Limitations. Pregnancy is a reason for a separate talk about risks and alternatives, since human safety data for many of these drugs is limited.

The American Headache Society statement says people don’t need to fail other preventives first, but plenty of plans still require it, so ask before you assume. Nurtec vs Ubrelvy can also look different to an insurer, because plans cover each one differently. At Lone Star Neurology, migraine treatment can begin the same day as your first appointment. Before prescribing, a neurologist also checks your blood pressure history, your other conditions, and any circulation problems in your hands or feet, since those matter for several drugs in this class.

Side Effects and What to Discuss With Your Neurologist

Like every medication, these can cause side effects. They depend on whether the drug is a tablet, an injection, or an infusion, and most reported reactions are mild or moderate. Still, you should know them before starting:

• Nurtec. Nurtec side effects in acute use mostly mean nausea. In preventive use, nausea and stomach pain or indigestion show up more often than with placebo.
• Ubrelvy. Ubrelvy side effects include nausea, sleepiness, and dry mouth.
• Qulipta. Constipation, nausea, and tiredness are the most common complaints.
• Injections. Redness, soreness, or swelling at the injection site is common, and the Emgality FDA label also warns about severe constipation.
• Across the class. Serious allergic reactions, with rash or trouble breathing, can appear and sometimes show up days after a dose. New or worsening high blood pressure and Raynaud’s phenomenon (cold, numb, or color-changing fingers and toes) have also been reported, so tell your doctor if either appears.

This is a newer class than many older preventives, so long-term real-world experience is still building. Before your visit, write down every medicine and supplement you take, bring your diary, and ask what benefit to expect and how long to give it. If a pill leaves you too sleepy to drive, say so early, because there are usually adjustments to try.

Medication won’t cover every headache. A sudden, explosive headache, or one with weakness, confusion, or a stiff neck, is covered in our piece on when to worry about a headache, and some of those situations need 911. To book a visit, call 214-619-1910 or book online.