Does Eliquis Cause Headaches?
Yes, headaches are a reported side effect of Eliquis (apixaban), an anticoagulant used to prevent blood clots. Clinical trials and post-marketing data list headaches as occurring in 5-6% of patients, more frequently than placebo.[1][2]
How Common Are Headaches on Eliquis?
In the ARISTOTLE trial comparing Eliquis to warfarin, headaches affected about 6% of Eliquis users versus 5% on warfarin. They are typically mild and transient, often resolving without stopping the drug.[1][3] Real-world reports from patients note headaches starting within days to weeks of initiation.
Why Might Eliquis Trigger Headaches?
Eliquis inhibits factor Xa, reducing clotting. This can alter cerebral blood flow or cause minor bleeds, potentially leading to headaches. Dehydration, blood pressure changes, or interactions with other meds (like NSAIDs) may worsen them.[2][4] Not all headaches link directly to the drug—migraines or tension types predate treatment in some cases.
What Do Patients Report About Eliquis Headaches?
User forums and FDA adverse event reports describe throbbing or pressure-like headaches, sometimes with dizziness or fatigue. Severity varies; some stop Eliquis after consulting doctors, while others manage with hydration or OTC pain relievers (avoiding aspirin due to bleed risk).[5]
When to Worry About Headaches on Eliquis
Seek immediate care for sudden, severe headaches, vision changes, confusion, or neck stiffness—these signal possible intracranial bleeding, a rare but serious Eliquis risk (0.2-0.5% incidence).[1][2] Routine headaches warrant a doctor check to rule out interactions or dose issues.
Managing Headaches While Taking Eliquis
Stay hydrated, track triggers, and use acetaminophen if approved by your doctor. Dose adjustments or switches to alternatives like Pradaxa may help persistent cases. Never self-adjust without medical advice due to stroke risk.[4]
Eliquis vs. Other Blood Thinners for Headaches
Headaches occur similarly across DOACs: Pradaxa (5-10%), Xarelto (6%), Savaysa (4-5%). Warfarin users report slightly fewer (4-5%) but face more intracranial bleeds.[1][3] Eliquis has a lower overall bleed profile, balancing headache concerns.
[1]: FDA Eliquis Label
[2]: Eliquis Prescribing Information
[3]: ARISTOTLE Trial (NEJM)
[4]: Drugs.com Eliquis Side Effects
[5]: FDA FAERS Database