Brilinta Drug Interactions You Need to Know About

If you're taking Brilinta (Ticagrelor), you already know it's an important medication for preventing heart attacks and strokes. What you might not know is that Brilinta interacts with a surprisingly long list of other medications, supplements, and even certain foods.

Some of these interactions are dangerous. Others are manageable with dose adjustments. Either way, knowing what to watch for — and making sure your doctor knows everything you're taking — is essential for staying safe.

How Drug Interactions Work with Brilinta

Brilinta is processed in your body by a liver enzyme called CYP3A4. This is one of the most important enzymes for drug metabolism — it breaks down dozens of common medications.

When another drug speeds up CYP3A4 (an "inducer"), Brilinta gets broken down too fast. Your blood levels drop, and the medication becomes less effective at preventing clots.

When another drug slows down CYP3A4 (an "inhibitor"), Brilinta sticks around too long. Your blood levels rise, and you're at higher risk for bleeding and other side effects.

Understanding this basic concept makes the entire interaction list make sense.

Major Drug Interactions (Contraindicated or Dangerous)

These interactions are serious enough that the medications should generally not be taken together with Brilinta:

Strong CYP3A4 Inhibitors — Dramatically Increase Brilinta Levels

• Ketoconazole (Nizoral) — antifungal
• Itraconazole (Sporanox) — antifungal
• Voriconazole (Vfend) — antifungal
• Clarithromycin (Biaxin) — antibiotic
• Nefazodone — antidepressant
• Ritonavir (Norvir) — HIV protease inhibitor
• Atazanavir (Reyataz) — HIV protease inhibitor

If you need one of these medications, your doctor should either choose an alternative that doesn't inhibit CYP3A4 or discuss whether Brilinta needs to be temporarily paused (with a substitute antiplatelet if needed).

Strong CYP3A4 Inducers — Make Brilinta Ineffective

• Rifampin (Rifadin) — antibiotic for tuberculosis
• Phenytoin (Dilantin) — seizure medication
• Carbamazepine (Tegretol) — seizure/mood stabilizer
• Phenobarbital — seizure medication/sedative

These drugs can reduce Ticagrelor levels so dramatically that the medication stops working. If you need one of these, your doctor may switch you to a different antiplatelet agent like Clopidogrel or Prasugrel.

Aspirin Above 100 mg/Day — Reduces Brilinta's Effectiveness

This one surprises many patients because Brilinta must be taken with aspirin. But there's a catch: the aspirin dose has to be low — specifically 75–100 mg per day.

In clinical trials, patients who took higher doses of aspirin (above 100 mg/day) with Brilinta had worse outcomes than those on low-dose aspirin. This is so important that it's part of Brilinta's boxed warning from the FDA.

Make sure your doctor knows your exact aspirin dose. If you're taking 325 mg aspirin for any reason, it needs to be reduced while you're on Brilinta.

Other Antiplatelet Agents and Anticoagulants — Increased Bleeding Risk

Taking Brilinta with other blood-thinning medications increases bleeding risk. These include:

• Warfarin (Coumadin)
• Heparin and low-molecular-weight heparins (Enoxaparin/Lovenox)
• NSAIDs — Ibuprofen (Advil, Motrin), Naproxen (Aleve), Diclofenac, and others
• Other antiplatelet drugs — such as Clopidogrel (Plavix) or Prasugrel (Effient)

Some patients do take Brilinta with an anticoagulant under close medical supervision ("triple therapy" or "dual pathway" therapy), but this requires careful monitoring and should only be done under a specialist's guidance.

Opioids — May Delay Brilinta's Absorption

Opioid pain medications (Morphine, Oxycodone, Hydrocodone, Fentanyl, and others) can slow down your stomach and intestines, delaying how quickly Brilinta gets absorbed into your bloodstream. This can be a problem during a heart attack, when fast absorption is critical.

If you're receiving opioids during a cardiac event, your medical team may take extra steps to ensure adequate antiplatelet coverage.

Moderate Drug Interactions (Use with Caution)

These medications can be used with Brilinta but may require dose adjustments or monitoring:

• Simvastatin (Zocor) and Lovastatin (Mevacor) — Brilinta increases levels of these cholesterol drugs. Simvastatin should be limited to 40 mg/day when taken with Brilinta to reduce the risk of muscle damage (rhabdomyolysis).
• Digoxin (Lanoxin) — Brilinta increases digoxin levels. Your doctor should monitor digoxin levels more frequently and may need to adjust your dose.
• Moderate CYP3A4 inhibitors — Diltiazem (Cardizem), Erythromycin (Ery-Tab), and Fluconazole (Diflucan) may increase Ticagrelor levels. Usually manageable but worth monitoring.
• Cyclosporine (Sandimmune, Neoral) — Brilinta may increase cyclosporine levels, requiring close monitoring, especially in transplant patients.

Supplements and Over-the-Counter Medications to Watch

Don't assume that "natural" or over-the-counter means safe with Brilinta. Several common supplements and OTC products interact:

• St. John's Wort — A strong CYP3A4 inducer. Can make Brilinta less effective, similar to Rifampin. Avoid completely.
• Fish oil / Omega-3 supplements — May increase bleeding risk when combined with antiplatelet drugs. Talk to your doctor before taking them.
• Vitamin E (high dose) — High-dose vitamin E can have mild antiplatelet effects, potentially increasing bleeding risk.
• Ginkgo biloba — Has antiplatelet properties and may increase bleeding risk.
• Garlic supplements (high dose) — May have mild blood-thinning effects.
• NSAIDs (Ibuprofen, Naproxen) — Available over the counter but increase bleeding risk significantly. Use Acetaminophen (Tylenol) for pain instead when possible.
• Aspirin (extra-strength, 500 mg) — Remember, aspirin doses above 100 mg reduce Brilinta's effectiveness. Don't take extra-strength aspirin for headaches while on Brilinta.

Food and Drink Interactions

Grapefruit and Grapefruit Juice

Grapefruit inhibits CYP3A4, the same enzyme that breaks down Brilinta. Drinking grapefruit juice or eating grapefruit can increase Ticagrelor levels in your blood, raising your risk of bleeding. While an occasional small serving is unlikely to cause problems, regular or large amounts should be avoided.

Other tropical fruits that can have a similar (though lesser) effect include starfruit, papaya, and kiwi.

Alcohol

Alcohol increases bleeding risk on its own. Combined with Brilinta, the risk is higher. An occasional drink is generally considered acceptable, but heavy drinking or binge drinking should be avoided. Talk to your doctor about how much alcohol is safe for you.

What to Tell Your Doctor

To stay safe on Brilinta, make sure every healthcare provider you see knows:

• Every prescription medication you take — including ones from other doctors or specialists
• All over-the-counter medications — especially NSAIDs and aspirin products
• All supplements and vitamins — including herbal products like St. John's Wort, fish oil, and ginkgo
• Your aspirin dose — confirm it's 100 mg or below
• Any upcoming surgeries or dental procedures — Brilinta may need to be stopped 5 days before
• New symptoms — especially unusual bleeding, bruising, shortness of breath, or dizziness

Keep an updated medication list in your wallet or phone. In an emergency, this list can be critical for the medical team treating you.

Final Thoughts

Brilinta is a highly effective medication, but it has more drug interactions than some patients realize. The key interactions to remember: no strong CYP3A4 inhibitors or inducers, keep aspirin at 100 mg or below, be cautious with other blood thinners, and avoid St. John's Wort and large amounts of grapefruit.

When in doubt, ask your doctor or pharmacist before starting any new medication, supplement, or herbal product. They can check for interactions and make adjustments to keep you safe.

For more information about Brilinta, explore our guides on side effects, uses and dosage, and savings options. Need help finding Brilinta at a pharmacy? Search Medfinder.