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What is the new Wonder drug for migraines? A look into gepant medications

4 min read

Migraine affects approximately 15% of the global population, but recent breakthroughs in the biotech industry have led to novel treatments targeting a specific neuropeptide. The new 'Wonder drug' for migraines is not a single pill, but an entire class of drugs known as gepants, which are specifically designed to disrupt the migraine pathway.

Quick Summary

Gepants are a new class of oral and nasal spray medications for migraine that specifically target the CGRP receptor, offering relief for both acute attacks and prevention. They provide a safe alternative to traditional treatments like triptans, particularly for those with cardiovascular risks.

Key Points

  • Targeted Action: Gepants are a new class of drugs that specifically block the CGRP pathway, which is implicated in migraine pain.

  • Variety of Options: The gepant class includes several FDA-approved medications (ubrogepant, rimegepant, atogepant, zavegepant) for acute treatment, prevention, or both.

  • Improved Safety Profile: Unlike triptans, gepants do not cause widespread vasoconstriction, making them a safer option for patients with cardiovascular risk factors.

  • Fast-Acting Relief: Newer gepants, such as zavegepant nasal spray, can provide rapid pain relief in as little as 15 minutes for acute migraine attacks.

  • Reduced Risk of Overuse Headache: Clinical data suggests that gepants have a low risk of causing medication-overuse headaches, which is a major concern with older pain relievers.

  • Multiple Formulations: Available in oral tablets, orally disintegrating tablets (ODT), and nasal spray forms, providing flexibility for patients with nausea or difficulty swallowing.

In This Article

Understanding the Shift in Migraine Treatment

For decades, migraine treatment options were limited, often relying on medications that were not originally designed for migraine. Many came with side effects or were contraindicated in patients with conditions like cardiovascular disease. This landscape has been dramatically altered by the development of CGRP-targeted therapies, representing a new era of personalized medicine for migraine sufferers. This new class of medications, known as gepants, specifically targets the calcitonin gene-related peptide (CGRP) pathway, a critical component of migraine pathophysiology.

How CGRP Inhibitors Work

Calcitonin gene-related peptide (CGRP) is a protein that plays a key role in the onset of migraine attacks. Normally, CGRP functions to dilate blood vessels and plays a role in nerve signaling. However, in people with migraine, CGRP is released in excess, activating nerves that intensify and prolong pain signals. CGRP inhibitors work in one of two ways:

  • Monoclonal antibodies (moAbs): These are injectable or infused antibodies that either bind to the CGRP protein itself or block its receptor, preventing it from initiating the pain cascade.
  • CGRP receptor antagonists (gepants): These are small-molecule oral drugs or nasal sprays that block the CGRP receptors in the brain. By occupying these receptor sites, gepants prevent CGRP from binding to them and triggering the pain signals associated with a migraine attack.

The Gepant 'Wonder Drugs' for Migraine

Several gepants have received FDA approval, offering a range of options for patients based on their specific needs. This class of drug is particularly beneficial for those who cannot tolerate or do not respond to older treatments like triptans.

  • Ubrogepant (Ubrelvy): Approved in 2019 for the acute treatment of migraine with or without aura in adults. It is taken orally when a migraine attack begins and may be repeated if needed. Ubrogepant is not used for preventive treatment.
  • Rimegepant (Nurtec ODT): A versatile treatment approved for both the acute treatment and preventive treatment of episodic migraine. For acute attacks, it is an orally disintegrating tablet (ODT) taken as needed. For prevention, it is taken on an every-other-day schedule.
  • Atogepant (Qulipta): Specifically approved for the preventive treatment of both episodic and chronic migraine in adults. It is taken as a once-daily oral tablet.
  • Zavegepant (Zavzpret): Approved in 2023, this is the first and only CGRP receptor antagonist available as a nasal spray for the acute treatment of migraine with or without aura. The nasal spray delivery allows for rapid absorption and offers an alternative for those who experience nausea and vomiting with oral medications.

Comparison of Gepants

Feature Ubrogepant (Ubrelvy) Rimegepant (Nurtec ODT) Atogepant (Qulipta) Zavegepant (Zavzpret)
Indication Acute treatment Acute & preventive (episodic) Preventive (episodic & chronic) Acute treatment
Formulation Oral Tablet Orally Disintegrating Tablet (ODT) Oral Tablet Nasal Spray
Administration for Acute Attack Taken as needed for an acute attack Taken as needed for an acute attack N/A Single spray for an acute attack
Administration for Prevention N/A Taken on an every other day schedule Taken once daily N/A
Onset of Relief (Acute) Typically within 2 hours As quickly as 1 hour N/A As quickly as 15 minutes

Potential Side Effects and Safety Profile

Gepants generally offer a favorable side effect profile compared to older migraine medications. Triptans, for example, work by constricting blood vessels and are contraindicated for people with cardiovascular issues. Gepants, because they target CGRP receptors without causing widespread vasoconstriction, are considered a safer option for many with cardiovascular risk factors.

Commonly reported side effects for gepants include:

  • Nausea
  • Somnolence (sleepiness)
  • Constipation
  • Dry mouth
  • Dysgeusia (altered sense of taste) with zavegepant nasal spray

It is important to note that gepants can interact with other medications, particularly strong CYP3A4 inhibitors (e.g., certain antibiotics and antifungals), which can increase the level of gepant in the body. Patients should always inform their doctor of all medications and supplements they are taking. Early research also suggests that gepants have a negligible risk of causing medication-overuse headaches, a significant advantage over many traditional acute headache treatments.

Conclusion: A New Horizon for Migraine Relief

The introduction of gepant medications marks a significant milestone in the pharmacological management of migraine. By shifting the focus to the specific CGRP pathway, these drugs offer a more targeted approach with a generally more favorable side-effect profile than older treatments. With multiple options available for acute relief, prevention, or both, as well as different delivery methods like oral tablets, dissolving tablets, and nasal sprays, physicians can now offer a more personalized treatment plan. This paradigm shift provides genuine new hope for the millions of people whose lives are severely impacted by migraine attacks. For more information on migraine therapies, resources like the American Migraine Foundation can be invaluable [(https://americanmigrainefoundation.org/)].

Frequently Asked Questions

Gepants specifically block the CGRP receptor, a pathway involved in migraine pain, and do not cause vasoconstriction. Triptans target serotonin receptors and cause blood vessel constriction, which can be problematic for patients with heart conditions.

Gepants are considered a safer alternative for patients with cardiovascular risk factors compared to triptans. However, patients with a history of recent vascular events should use them with caution and under a doctor's supervision, as clinical trials have often excluded these patients.

Some gepants, like Ubrogepant (Ubrelvy) and Zavegepant (Zavzpret), are used for acute treatment of migraine attacks. Others, like Atogepant (Qulipta), are for prevention. Rimegepant (Nurtec ODT) is approved for both acute treatment and prevention.

Onset of relief varies by specific drug and formulation. Some oral gepants like rimegepant can start working within an hour, while zavegepant nasal spray can provide relief in as little as 15 minutes.

No, clinical studies and preclinical data suggest that gepants do not cause medication-overuse headaches, unlike many older acute migraine medications.

The most common side effects are generally mild and can include nausea, somnolence, fatigue, dry mouth, and constipation. Zavegepant nasal spray may also cause altered taste or nasal discomfort.

Your healthcare provider can determine if a gepant is a suitable option based on your medical history, migraine frequency and severity, and response to previous treatments. They will consider your overall health and any potential drug interactions.

It is crucial to discuss all your medications, including over-the-counter drugs and supplements, with your doctor or pharmacist. Gepants can have drug interactions, particularly with strong CYP3A4 inhibitors, and dosages may need adjustment.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.