Eliquis (apixaban) 5 mg taken twice daily is a blood thinner, and its most common side effects stem directly from that job: bleeding and bruising. The risk of major bleeding is 3% or less, while less serious but still noticeable bleeding occurs in roughly 2% to 4% of users. Most people tolerate the medication well, but understanding what to watch for helps you tell the difference between a normal nuisance and something that needs urgent attention.
How Eliquis Works and Why Bleeding Is the Main Risk
Eliquis blocks a specific protein in your clotting system called Factor Xa. Without that protein working at full capacity, your blood takes longer to form clots. That’s the entire point of the drug: it prevents dangerous clots in conditions like atrial fibrillation, deep vein thrombosis, and pulmonary embolism. But the same mechanism that protects you from harmful clots also means your body is slower to stop bleeding when you cut yourself, bump into something, or have a nosebleed.
Common Side Effects
In large clinical trials, the most frequently reported side effects of Eliquis at the 5 mg dose were all related to bleeding in some form. In a study of over 2,600 patients being treated for blood clots, these occurred in at least 1% of users:
- Nosebleeds (2.9% to 3.6%, depending on the study)
- Easy bruising (1.8% to 2.2%)
- Blood in urine (1.7% to 2.1%)
- Bleeding gums (1.0% to 1.1%)
- Heavier menstrual periods (1.4%)
- Small hematomas under the skin (1.3% to 2.0%)
- Rectal bleeding (1.0%)
- Coughing up blood (1.2%)
Nausea was also reported in about 2.6% of patients in surgical studies, though this is less commonly discussed as an ongoing issue for long-term users. Many of these side effects are mild and manageable. A nosebleed that stops on its own within a few minutes, or a bruise from a minor bump that looks worse than usual, generally falls into the “expected nuisance” category.
Serious Side Effects That Need Immediate Attention
Severe bleeding affects fewer than 3% of Eliquis users, but when it happens, it can be dangerous. You should seek emergency care if you notice blood in your vomit or cough (it can look like coffee grounds), pink or brown urine, black or red tarry stools, or any bleeding that simply won’t stop.
Brain bleeding is rare but is the most dangerous complication. Warning signs include a sudden, severe headache, dizziness, vision changes, difficulty speaking, or facial drooping. These overlap with stroke symptoms for good reason: bleeding inside the skull is a type of stroke, and it requires emergency treatment.
Spinal blood clots are another serious concern, specifically for people who undergo spinal procedures like epidurals, lumbar punctures, or spinal surgery while taking Eliquis. This complication can lead to permanent paralysis. If you’re on Eliquis, make sure every healthcare provider you see knows about it before any procedure near your spine. Your doctor will typically stop Eliquis 24 to 48 hours beforehand and restart it once the bleeding risk has passed.
Stopping Eliquis Before Surgery
For any elective surgery or invasive procedure, Eliquis needs to be paused ahead of time. The FDA labeling recommends stopping it at least 48 hours before procedures with a moderate or high bleeding risk, and at least 24 hours before low-risk procedures where any bleeding would be minor and easy to control. Never stop taking Eliquis on your own without a plan, though. Abruptly discontinuing a blood thinner can increase your risk of the very clots it was prescribed to prevent.
Drugs and Supplements That Raise Bleeding Risk
Several common medications amplify the bleeding risk when combined with Eliquis. The most important ones to be aware of:
- Aspirin and other antiplatelet drugs
- NSAIDs like ibuprofen and naproxen, especially with chronic use
- Other blood thinners including warfarin and heparin
- Certain antidepressants in the SSRI and SNRI classes (these affect how platelets work)
On the flip side, some substances reduce how well Eliquis works by speeding up how your body breaks it down. St. John’s wort, the seizure medications carbamazepine and phenytoin, and the antibiotic rifampin all fall into this category. Taking any of these with Eliquis can lower the drug’s levels in your blood enough that it stops protecting you from clots.
Who Gets a Lower Dose
Not everyone stays on the 5 mg dose. A dose reduction to 2.5 mg twice daily is recommended when a patient meets at least two of these three criteria: age 80 or older, body weight of 132 pounds (60 kg) or less, or a blood creatinine level of 1.5 mg/dL or higher (a marker of reduced kidney function). This adjustment exists because smaller, older bodies and less efficient kidneys all lead to higher drug concentrations, which increases bleeding risk.
For extended treatment of blood clots, the lower 2.5 mg dose appears to work comparably to the 5 mg dose for preventing recurrence, with no detected difference in major bleeding events between the two. In the extended-treatment trial, certain bleeding side effects were noticeably more common at 5 mg: nosebleeds occurred in 3.6% of the 5 mg group versus 1.5% at 2.5 mg, and blood in urine was reported in 2.1% versus 1.4%.
What Happens During a Major Bleeding Emergency
If you experience life-threatening or uncontrollable bleeding while on Eliquis, a reversal agent exists. Approved by the FDA in 2018, it works as a decoy protein that binds to the drug and deactivates it, allowing your clotting system to function normally again. This agent is reserved for true emergencies, particularly situations like bleeding inside the brain, and is given intravenously in a hospital setting. Its availability has added an important safety net for patients on Eliquis, addressing one of the early concerns about newer blood thinners lacking an antidote.