Zavzpret Drug Interactions You Should Know About

If you're taking Zavzpret (Zavegepant) for migraines, it's important to understand how it might interact with other medications, supplements, or substances. While Zavzpret has fewer drug interactions than many older migraine treatments, there are still some combinations your doctor needs to know about.

This guide covers the major and moderate interactions, what to watch for with OTC drugs and supplements, and how to have the right conversation with your healthcare provider.

How Drug Interactions Work

Drug interactions happen when one substance changes how another works in your body. This can mean:

• Increased levels — One drug slows the breakdown of another, leading to higher-than-expected amounts in your bloodstream and a greater risk of side effects.
• Decreased effectiveness — One drug speeds up the breakdown of another, reducing its effect.
• Additive effects — Two drugs with similar actions combine to produce stronger effects than either would alone.

Zavzpret is processed in the body through specific transport proteins and enzymes. Medications that affect these same pathways can change how much Zavzpret is in your system.

Medications That May Interact with Zavzpret

Major Interactions

These are the most important ones to be aware of:

• OATP1B1/1B3 inhibitors — These are transport proteins that help move Zavzpret through your body. Drugs that inhibit them can increase Zavegepant levels in your blood.
  • Cyclosporine (Sandimmune, Neoral, Gengraf) — an immunosuppressant used for organ transplant recipients and autoimmune conditions
  • Rifampin (Rifadin) — when acting as an OATP inhibitor, can increase exposure; however, rifampin can also have inducing effects on other pathways
• BCRP inhibitors — Breast cancer resistance protein (BCRP) is another transport protein. Drugs that inhibit it can increase Zavzpret levels.
  • Elacridar and some other investigational agents
  • Curcumin (in high supplemental doses) has shown BCRP-inhibiting properties
• MRP2 inhibitors — Multidrug resistance-associated protein 2 inhibitors can also increase Zavegepant exposure.
  • Probenecid — a medication used for gout
  • Cyclosporine (again — this drug affects multiple pathways)

Moderate Interactions

• Other CGRP-targeting therapies — If you're already taking a CGRP monoclonal antibody for migraine prevention, using Zavzpret on top of it means you're blocking CGRP through two different mechanisms. While some doctors do prescribe these together, combining them may increase the risk of side effects. These include:
  • Aimovig (Erenumab)
  • Ajovy (Fremanezumab)
  • Emgality (Galcanezumab)
  • Vyepti (Eptinezumab)
• Hepatotoxic medications — Drugs that stress the liver may require extra monitoring when taken with Zavzpret. Examples include:
  • Acetaminophen (Tylenol) at high doses
  • Methotrexate
  • Certain statins
• Strong CYP3A4 inhibitors — These may have modest effects on Zavzpret levels. Common examples include:
  • Ketoconazole (Nizoral)
  • Itraconazole (Sporanox)
  • Clarithromycin (Biaxin)
  • Ritonavir (Norvir)
  • Grapefruit juice in large amounts (a CYP3A4 inhibitor)

Supplements and OTC Drugs to Watch

These are less likely to cause major problems, but worth mentioning to your doctor:

• High-dose curcumin/turmeric supplements — May inhibit BCRP, potentially increasing Zavzpret levels. Standard culinary amounts of turmeric are fine.
• St. John's Wort — A known enzyme inducer that may affect many medications. While its direct effect on Zavzpret hasn't been extensively studied, it's worth mentioning.
• Acetaminophen (Tylenol) — Safe at normal doses, but high or frequent use alongside Zavzpret may increase liver strain.
• NSAIDs (Ibuprofen, Naproxen) — No known direct interaction with Zavzpret. Many patients use an NSAID alongside Zavzpret for migraine relief. Discuss with your doctor.

Food and Drink Interactions

Because Zavzpret is administered as a nasal spray and doesn't pass through the digestive system the same way oral medications do, food interactions are minimal:

• No significant food interactions have been reported with Zavzpret.
• Grapefruit juice — As noted above, large quantities of grapefruit juice can inhibit CYP3A4, which may modestly affect Zavzpret levels. Occasional grapefruit consumption is unlikely to be an issue, but regular large amounts are worth mentioning to your doctor.
• Alcohol — While there's no direct interaction listed, alcohol can trigger migraines and worsen migraine symptoms. It's generally wise to limit alcohol if you're prone to migraines.

What to Tell Your Doctor

Before starting Zavzpret, make sure your doctor knows about:

1. All prescription medications you take — including immunosuppressants, antibiotics, antifungals, and HIV medications.
2. All over-the-counter medications — including pain relievers, allergy medications, and sleep aids.
3. All supplements and herbal products — especially high-dose turmeric/curcumin and St. John's Wort.
4. Other migraine medications — particularly CGRP monoclonal antibodies (Aimovig, Ajovy, Emgality, Vyepti) and other gepants (Ubrelvy, Nurtec ODT).
5. Liver conditions — Zavzpret should be avoided in severe liver impairment and used with caution alongside hepatotoxic medications.
6. Kidney conditions — While no dose adjustment is needed for mild-to-moderate kidney impairment, your doctor should still be aware.

Keep an updated medication list and bring it to every appointment. This is the single best thing you can do to prevent harmful interactions.

Final Thoughts

Zavzpret has a relatively clean drug interaction profile compared to many migraine treatments. The main concerns are drugs that affect OATP, BCRP, and MRP2 transport proteins — and combining it with other CGRP-targeting therapies. Most common OTC drugs and supplements are fine, but always keep your doctor informed.

If you're taking Zavzpret and want to learn more about how it works, visit our guide on Zavzpret's mechanism of action. And if you need help finding it at a pharmacy, Medfinder can show you where Zavzpret is in stock near you.