Recommended Dosing of Apixaban (Eliquis)
The standard dose of apixaban for most patients with nonvalvular atrial fibrillation is 5 mg taken orally twice daily. 1
Standard Dosing by Indication
- Nonvalvular Atrial Fibrillation (NVAF): 5 mg orally twice daily 2, 1
- Deep Vein Thrombosis (DVT) and Pulmonary Embolism (PE) Treatment: 10 mg orally twice daily for the first 7 days, followed by 5 mg orally twice daily 2, 1
- DVT/PE Prevention after Hip or Knee Replacement Surgery: 2.5 mg orally twice daily, starting 12-24 hours after surgery 1
- Reduction in Risk of Recurrent DVT/PE: 2.5 mg orally twice daily after at least 6 months of treatment for DVT or PE 1
Dose Reduction Criteria
For Nonvalvular Atrial Fibrillation
The dose should be reduced to 2.5 mg twice daily if the patient has at least two of the following characteristics 2, 1:
- Age ≥80 years
- Body weight ≤60 kg
- Serum creatinine ≥1.5 mg/dL (133 μmol/L)
Special Considerations for Renal Function
- Normal to Moderate Renal Impairment: No dose adjustment needed for patients with creatinine clearance >30 mL/min 2
- Severe Renal Impairment: For patients with end-stage renal disease on hemodialysis, 5 mg twice daily with reduction to 2.5 mg twice daily if age ≥80 years or body weight ≤60 kg 2
Clinical Evidence Supporting Dosing Recommendations
- The ARISTOTLE trial demonstrated that apixaban 5 mg twice daily reduced stroke or systemic embolism by 21% compared with warfarin, with a 31% reduction in major bleeding and 11% reduction in all-cause mortality 2
- Patients with only one dose-reduction criterion still benefit from the standard 5 mg twice daily dose, showing similar efficacy and safety profiles compared to those with no dose-reduction criteria 3
- Inappropriate dose reduction (using 2.5 mg twice daily when not indicated) may compromise efficacy without providing additional safety benefits 4, 5
Temporary Interruption for Procedures
- For elective surgery or invasive procedures with moderate/high bleeding risk: discontinue apixaban at least 48 hours prior 1
- For procedures with low bleeding risk: discontinue at least 24 hours prior 1
- For high hemorrhagic risk procedures (e.g., neurosurgery): consider longer interruption periods of up to 3-5 days 2
- Resume apixaban as soon as adequate hemostasis has been established 1
Important Warnings
- Premature Discontinuation: Stopping apixaban increases thrombotic risk; if discontinuation is necessary for reasons other than bleeding, consider alternative anticoagulation 1
- Missed Dose: If a dose is missed, take it as soon as possible on the same day and resume twice-daily administration; do not double the dose 1
- Spinal/Epidural Hematoma Risk: Patients receiving neuraxial anesthesia or undergoing spinal puncture are at risk; monitor frequently for neurological impairment 1
Switching Between Anticoagulants
- From warfarin to apixaban: Discontinue warfarin and start apixaban when INR is below 2.0 1
- From apixaban to warfarin: Consider bridging with parenteral anticoagulant until INR reaches acceptable range 1
- Between apixaban and other anticoagulants: Begin the new anticoagulant at the time the next dose of the previous anticoagulant would have been taken 1
Apixaban offers predictable anticoagulation without the need for routine monitoring, making it an attractive alternative to traditional vitamin K antagonists like warfarin for many patients requiring anticoagulation 6.