Does Eliquis List Weakness as a Side Effect?
Eliquis (apixaban), a blood thinner used to prevent strokes and clots, can cause weakness. Clinical data and patient reports link it to asthenia (generalized weakness or fatigue) as a recognized side effect, occurring in up to 1-5% of users in trials.[1][2] This stems from its anticoagulant action, which may lead to reduced oxygen delivery or minor blood loss contributing to fatigue.
How Common Is Weakness on Eliquis?
Weakness appears in post-marketing surveillance and FDA labeling as an uncommon but reported issue. In the ARISTOTLE trial (comparing Eliquis to warfarin), asthenia affected about 1.3% of Eliquis patients versus 1.2% on warfarin—similar rates, but Eliquis users noted it more in real-world settings.[1][3] Elderly patients or those with kidney issues report it more often.
What Causes Weakness with Eliquis?
Weakness often ties to:
- Bleeding-related anemia: Eliquis increases bleed risk (major bleeding in 2.13% per year in trials), depleting red blood cells and causing fatigue.[1]
- Interactions: With drugs like aspirin or NSAIDs, amplifying bleed risk and weakness.[2]
- Underlying conditions: Heart failure or low blood pressure, common in Eliquis users, exacerbate it.
When Should You Worry About Weakness on Eliquis?
Sudden or severe weakness signals potential serious issues:
- Intracranial bleed (rare, ~0.2% risk).[1]
- Gastrointestinal bleed mimicking flu-like weakness.
Seek immediate care if paired with dizziness, pale skin, shortness of breath, or confusion—stop Eliquis only under medical guidance to avoid clots.[2]
How Does Eliquis Compare to Other Blood Thinners for Weakness?
| Drug | Weakness/Asthenia Rate | Notes |
|------|-------------------------|-------|
| Eliquis (apixaban) | 1-5% | Lower bleed risk than warfarin.[1] |
| Xarelto (rivaroxaban) | 2-4% | Similar profile, higher GI bleed reports.[3] |
| Pradaxa (dabigatran) | 3-6% | More dyspepsia-linked fatigue.[3] |
| Warfarin | 1-2% | Requires monitoring; vitamin K interactions.[1] |
Eliquis generally has fewer fatigue complaints than Pradaxa but matches rivals in bleed-driven weakness.[3]
What Do Patients Report About Eliquis Weakness?
Forums and FDA adverse event data show thousands of weakness complaints, often starting weeks into treatment. Many describe 'constant tiredness' resolving after dose adjustment or switching. Risk factors: age over 75, low weight, or combo therapy.[4]
Managing or Stopping Eliquis for Weakness