Yes, Nurtec (rimegepant) is a CGRP inhibitor. Specifically, it belongs to a class of drugs called gepants, which are small molecules that block CGRP from binding to its receptors in the brain. It’s FDA-approved for both treating migraine attacks as they happen and preventing episodic migraine in adults.
How Nurtec Targets CGRP
CGRP (calcitonin gene-related peptide) is a protein your body naturally produces. During a migraine, CGRP floods the nerve receptors around your brain, triggering inflammation and pain signals. Nurtec works by sitting on those receptors first, physically blocking CGRP from attaching and starting the pain cascade. Think of it like filling seats before CGRP can sit down.
This is different from some other CGRP treatments that grab onto the CGRP protein itself before it ever reaches a receptor. Nurtec targets the receptor side of the equation, not the protein side. The end result is the same: CGRP signals get interrupted, and migraine pain is reduced or prevented.
What Nurtec Is Approved to Treat
Nurtec is unusual among migraine medications because it carries two separate FDA approvals. It can be used as an acute treatment, meaning you take it when a migraine starts, to relieve pain. It’s also approved as a preventive treatment for episodic migraine, meaning you take it on a regular schedule to reduce how often migraines occur.
For acute use, you take a single 75 mg orally disintegrating tablet placed under the tongue when a migraine hits. The tablet dissolves without water, which is practical when nausea makes swallowing a pill difficult. Nurtec reaches peak levels in about 1.5 hours and has a half-life of roughly 8 to 11 hours. For prevention, the same 75 mg tablet is taken every other day on an ongoing basis.
How Well It Works
In pooled clinical trial data for acute treatment, 20% of patients taking Nurtec were completely pain-free at two hours, compared to about 12% on placebo. That gap may sound modest, but complete pain freedom is a high bar. Many more patients experienced meaningful pain reduction short of total freedom.
For prevention, patients taking Nurtec every other day had an average reduction of 4.3 monthly migraine days over 12 weeks, compared to 3.5 days for placebo. That difference of roughly one additional migraine-free day per month was statistically significant, though individual responses vary widely. Some people see a much larger benefit than the average suggests.
Common Side Effects
Nurtec is generally well tolerated. The most commonly reported side effect is nausea, which occurred in about 2 to 3% of patients in clinical trials versus less than 1% on placebo. Stomach pain and indigestion showed up at similar low rates during the prevention studies. Allergic reactions, including difficulty breathing and severe rash, occurred in less than 1% of patients.
One practical consideration: because Nurtec is processed through a liver enzyme called CYP3A4, it can interact with certain other medications, including some antibiotics, blood pressure drugs, HIV treatments, and CBD. If you take other medications regularly, this is worth flagging with your prescriber.
How Nurtec Differs From CGRP Injections
Not all CGRP medications work the same way. There are two main categories, and understanding the difference helps explain where Nurtec fits.
Gepants (like Nurtec) are small molecules taken by mouth. They block CGRP receptors directly. Other gepants include ubrogepant (Ubrelvy), atogepant (Qulipta), and zavegepant (Zavzpret), a nasal spray. Nurtec stands out because it’s currently the only gepant approved for both acute and preventive use.
CGRP monoclonal antibodies are lab-made proteins that either latch onto the CGRP molecule itself or block its receptor from the outside. These include erenumab (Aimovig), fremanezumab (Ajovy), galcanezumab (Emgality), and eptinezumab (Vyepti). They’re given by injection or IV infusion, typically once a month or once every three months, and are used only for prevention.
The key practical differences come down to how you take them and how they fit into your life. Nurtec is a dissolving tablet you can carry in your pocket and use on the spot or take every other day for prevention. Monoclonal antibodies require injections or infusions but only need to be administered monthly or quarterly. Monoclonal antibodies also have no known drug interactions, which can be an advantage for people on multiple medications. However, preventive gepants and preventive CGRP monoclonal antibodies should not be used at the same time.
Side effect profiles differ as well. The injectable antibodies commonly cause injection site reactions and, in the case of erenumab, constipation and elevated blood pressure. Gepants lean more toward digestive symptoms like nausea and stomach discomfort.