Understanding Brilinta Side Effects

Starting a new medication can be stressful — especially one as important as Brilinta (Ticagrelor). If your doctor prescribed it after a heart attack, acute coronary syndrome, or stroke, you probably have questions about what to expect.

The good news: most side effects of Brilinta are manageable and mild. The not-so-good news: because Brilinta is an antiplatelet drug designed to prevent blood clots, some side effects — particularly bleeding — need to be taken seriously.

Here's what you should know.

What Is Brilinta?

Brilinta is a brand-name antiplatelet medication. Its generic name is Ticagrelor. It belongs to a class of drugs called P2Y12 platelet inhibitors, which work by preventing platelets in your blood from sticking together and forming dangerous clots. You can learn more about how it works in our mechanism of action guide.

Brilinta is taken twice daily — usually as a 90 mg tablet for the first year after a cardiac event, then 60 mg twice daily for long-term prevention. It must be taken with low-dose aspirin (75–100 mg per day). For a full overview, see What Is Brilinta?

Common Side Effects

These side effects occur in a significant percentage of patients and are usually not dangerous on their own. However, always mention them to your doctor at your next visit:

• Bleeding (minor) — This is the most common side effect. You may notice more bruising than usual, nosebleeds, bleeding gums when brushing your teeth, or cuts that take longer to stop bleeding. This is expected with any antiplatelet drug.
• Shortness of breath (dyspnea) — About 14% of patients experience this. It's one of the most distinctive side effects of Brilinta compared to similar medications like Clopidogrel (Plavix). The shortness of breath is usually mild, occurs at rest, and typically resolves on its own within the first few weeks. If it persists or worsens, tell your doctor.
• Dizziness — Some patients feel lightheaded, especially when standing up quickly. Stay hydrated and get up slowly from sitting or lying positions.
• Nausea — Mild stomach upset can occur, particularly when first starting Brilinta. Taking it with food may help.
• Diarrhea — Usually mild and tends to improve over time.
• Headache — Common in the first few weeks of treatment.

Most of these side effects lessen as your body adjusts to the medication. If any become severe or don't improve after a few weeks, talk to your doctor — but don't stop taking Brilinta on your own.

Serious Side Effects: When to Call Your Doctor Immediately

Brilinta carries a boxed warning (the FDA's most serious warning) about bleeding risk. Here are the side effects that require immediate medical attention:

• Severe bleeding — Signs include blood in your urine (pink, red, or brown), black or tarry stools, coughing up blood, vomiting blood or material that looks like coffee grounds, unexplained heavy bruising, or bleeding that won't stop. Call 911 or go to the emergency room immediately.
• Signs of internal bleeding — Sudden severe headache, confusion, vision changes, slurred speech, or weakness on one side of your body could indicate intracranial bleeding. This is a medical emergency.
• Bradycardia (slow heartbeat) — Brilinta can cause your heart to beat more slowly than normal or cause pauses in your heartbeat (ventricular pauses). Symptoms include feeling faint, extreme dizziness, or passing out. Tell your doctor if you notice your heart rate seems unusually slow.
• Elevated uric acid (hyperuricemia) — Brilinta can raise uric acid levels, potentially triggering gout. Symptoms include sudden, severe joint pain (often in the big toe), swelling, redness, and warmth in the affected joint.
• Severe allergic reaction — Rash, hives, swelling of the face, lips, tongue, or throat, difficulty breathing, or severe dizziness. Seek emergency help right away.
• Thrombotic thrombocytopenic purpura (TTP) — Extremely rare but serious. Symptoms include purple spots on the skin, yellowing of the skin or eyes, fatigue, fever, and fast heart rate. This requires immediate treatment.

Specific Populations

Some groups need extra monitoring or may have different risk profiles with Brilinta:

• Older adults — Higher bleeding risk in general. Your doctor may monitor you more closely.
• Patients with liver disease — Brilinta is processed by the liver. It's contraindicated in severe liver disease and should be used with caution in moderate liver disease.
• Patients on blood thinners — Taking Brilinta with other anticoagulants like Warfarin, Heparin, or NSAIDs significantly increases bleeding risk. See our drug interactions guide for details.
• Patients with breathing problems — If you have asthma or COPD, the dyspnea side effect may be more noticeable. Let your doctor know about your respiratory history before starting Brilinta.
• Pregnant or breastfeeding women — Brilinta should only be used during pregnancy if the benefit clearly outweighs the risk. Discuss this with your doctor.

How to Manage Side Effects

Here are practical tips for handling the most common Brilinta side effects:

For Minor Bleeding

• Use a soft-bristle toothbrush and wax dental floss
• Use an electric razor instead of a blade
• Wear shoes or slippers to avoid cuts on your feet
• Be careful with sharp objects in the kitchen
• Apply firm pressure to any cuts for at least 5 minutes
• Avoid contact sports or activities with high injury risk

For Shortness of Breath

• It usually improves within the first few weeks
• Practice slow, deep breathing exercises
• Avoid overexertion during the adjustment period
• If it interferes with daily activities or worsens over time, contact your doctor

For Dizziness and Nausea

• Take Brilinta with food
• Stand up slowly from sitting or lying down
• Stay well hydrated
• Avoid alcohol, which can worsen both symptoms and increase bleeding risk

General Tips

• Keep all follow-up appointments — your doctor should check on your side effects regularly
• Never stop Brilinta without talking to your doctor first. Stopping abruptly increases your risk of heart attack, stroke, and death. If side effects are intolerable, your doctor may switch you to an alternative medication.
• Report all side effects, even mild ones, at every appointment
• Carry a medical ID card or bracelet that says you take an antiplatelet medication, in case of an emergency

Final Thoughts

Brilinta is a proven, life-saving medication for people at risk of heart attacks and strokes. Like all medications, it comes with side effects — but most are manageable, and the benefits of staying on treatment far outweigh the risks for most patients.

The most important thing: know what's normal and what's not. Minor bruising and occasional shortness of breath are expected. Severe bleeding, sudden neurological symptoms, or allergic reactions are not — and they require emergency care.

If you have questions about your specific situation, talk to your prescribing doctor. If you're looking for Brilinta at an affordable price, explore savings options or use Medfinder to find a pharmacy that has it in stock.