Apixaban
Tablet, Film Coated · Oral
Uses
Apixaban tablets are a factor Xa inhibitor indicated: to reduce the risk of stroke and systemic embolism in patients with nonvalvular atrial fibrillation. (1.1) for the prophylaxis of deep vein thrombosis (DVT), which may lead to pulmonary embolism (PE), in patients who have undergone hip or knee replacement surgery. (1.2) for the treatment of DVT and PE, and for the reduction in the risk of recurrent DVT and PE following initial therapy. (1.3 , 1.4 , 1.5) 1.1 Reduction of Risk of Stroke and Systemic Embolism in Nonvalvular Atrial Fibrillation Apixaban tablets are indicated to reduce the risk of stroke and systemic embolism in patients with nonvalvular atrial fibrillation. 1.2 Prophylaxis of Deep Vein Thrombosis Following Hip or Knee Replacement Surgery Apixaban tablets are indicated for the prophylaxis of deep vein thrombosis (DVT), which may lead to pulmonary embolism (PE), in patients who have undergone hip or knee replacement surgery. 1.3 Treatment of Deep Vein Thrombosis Apixaban tablets are indicated for the treatment of DVT. 1.4 Treatment of Pulmonary Embolism Apixaban tablets are indicated for the treatment of PE. 1.5 Reduction in the Risk of Recurrence of DVT and PE Apixaban tablets are indicated to reduce the risk of recurrent DVT and PE following initial therapy.
Dosage and administration
Reduction of risk of stroke and systemic embolism in nonvalvular atrial fibrillation: The recommended dose is 5 mg orally twice daily. (2.1) In patients with at least 2 of the following characteristics: age greater than or equal to 80 years, body weight less than or equal to 60 kg, or serum creatinine greater than or equal to 1.5 mg/dL, the recommended dose is 2.5 mg orally twice daily. (2.1) Prophylaxis of DVT following hip or knee replacement surgery: The recommended dose is 2.5 mg orally twice daily. (2.1) Treatment of DVT and PE: The recommended dose is 10 mg taken orally twice daily for 7 days, followed by 5 mg taken orally twice daily. (2.1) Reduction in the risk of recurrent DVT and PE following initial therapy: The recommended dose is 2.5 mg taken orally twice daily. (2.1) 2.1 Recommended Dose Reduction of Risk of Stroke and Systemic Embolism in Patients with Nonvalvular Atrial Fibrillation The recommended dose of apixaban tablets for most patients is 5 mg taken orally twice daily. The recommended dose of apixaban tablets is 2.5 mg twice daily in patients with at least two of the following characteristics: age greater than or equal to 80 years body weight less than or equal to 60 kg serum creatinine greater than or equal to 1.5 mg/dL Prophylaxis of Deep Vein Thrombosis Following Hip or Knee Replacement Surgery The recommended dose of apixaban tablets is 2.5 mg taken orally twice daily. The initial dose should be taken 12 to 24 hours after surgery. In patients undergoing hip replacement surgery, the recommended duration of treatment is 35 days. In patients undergoing knee replacement surgery, the recommended duration of treatment is 12 days. Treatment of DVT and PE The recommended dose of apixaban tablets is 10 mg taken orally twice daily for the first 7 days of therapy. After 7 days, the recommended dose is 5 mg taken orally twice daily. Reduction in the Risk of Recurrence of DVT and PE The recommended dose of apixaban tablets is 2.5 mg taken orally twice daily after at least 6 months of treatment for DVT or PE [see Clinical Studies (14.3) ] . 2.2 Missed Dose If a dose of apixaban tablets is not taken at the scheduled time, the dose should be taken as soon as possible on the same day and twice-daily administration should be resumed. The dose should not be doubled to make up for a missed dose. 2.3 Temporary Interruption for Surgery and Other Interventions Apixaban tablets should be discontinued at least 48 hours prior to elective surgery or invasive procedures with a moderate or high risk of unacceptable or clinically significant bleeding [see Warnings and Precautions ( 5.2 )]. Apixaban tablets should be discontinued at least 24 hours prior to elective surgery or invasive procedures with a low risk of bleeding or where the bleeding would be non-critical in location and easily controlled. Bridging anticoagulation during the 24 to 48 hours after stopping apixaban tablets and prior to the intervention is not generally required. Apixaban tablets should be restarted after the surgical or other procedures as soon as adequate hemostasis has been established. 2.4 Converting from or to Apixaban Tablets Switching from warfarin to apixaban tablets: Warfarin should be discontinued and apixaban tablets started when the international normalized ratio (INR) is below 2.0. Switching from apixaban tablets to warfarin: Apixaban tablets affects INR, so that initial INR measurements during the transition to warfarin may not be useful for determining the appropriate dose of warfarin. One approach is to discontinue apixaban tablets and begin both a parenteral anticoagulant and warfarin at the time the next dose of apixaban tablets would have been taken, discontinuing the parenteral anticoagulant when INR reaches an acceptable range. Switching from apixaban tablets to anticoagulants other than warfarin (oral or parenteral): Discontinue apixaban tablets and begin taking the new anticoagulant other than warfarin at the usual time of the next dose of apixaban tablets. Switching from anticoagulants other than warfarin (oral or parenteral) to apixaban tablets: Discontinue the anticoagulant other than warfarin and begin taking apixaban tablets at the usual time of the next dose of the anticoagulant other than warfarin. 2.5 Combined P-gp and Strong CYP3A4 Inhibitors For patients receiving apixaban tablets doses of 5 mg or 10 mg twice daily, reduce the dose by 50% when apixaban tablets are co-administered with drugs that are combined P-glycoprotein (P-gp) and strong cytochrome P450 3A4 (CYP3A4) inhibitors (e.g., ketoconazole, itraconazole, ritonavir) [see Clinical Pharmacology (12.3) ] . In patients already taking 2.5 mg twice daily, avoid co-administration of apixaban tablets with combined P-gp and strong CYP3A4 inhibitors [see Drug Interactions (7.1) ] . 2.6 Administration Options For patients who are unable to swallow whole tablets, 5 mg and 2.5 mg apixaban tablets may be crushed and suspended in water, 5% dextrose in water (D5W), or apple juice, or mixed with applesauce and promptly administered orally [see Clinical Pharmacology (12.3) ] . Alternatively, apixaban tablets may be crushed and suspended in 60 mL of water or D5W and promptly delivered through a nasogastric tube [see Clinical Pharmacology (12.3) ] . Crushed apixaban tablets are stable in water, D5W, apple juice, and applesauce for up to 4 hours. 2.1 Recommended Dose Reduction of Risk of Stroke and Systemic Embolism in Patients with Nonvalvular Atrial Fibrillation The recommended dose of apixaban tablets for most patients is 5 mg taken orally twice daily.
Dosage forms and strengths
2.5 mg, yellow, round, biconvex, film-coated tablets debossed with “M” on one side and “2.5” on other side. 5 mg, pink, oval, biconvex, film-coated tablets debossed with “M” on one side and “5” on other side. Tablets: 2.5 mg and 5 mg. (3)
Contraindications
Apixaban is contraindicated in patients with the following conditions: Active pathological bleeding [see Warnings and Precautions (5.2) and Adverse Reactions (6.1) ] Severe hypersensitivity reaction to apixaban (e.g., anaphylactic reactions) [see Adverse Reactions (6.1) ] Active pathological bleeding. (4) Severe hypersensitivity to apixaban. (4)
Warnings and precautions
Apixaban tablets can cause serious, potentially fatal, bleeding. Promptly evaluate signs and symptoms of blood loss. An agent to reverse the anti-factor Xa activity of apixaban is available. (5.2) Prosthetic heart valves: Apixaban use not recommended. (5.4) Increased Risk of Thrombosis in Patients with Triple Positive Antiphospholipid Syndrome: Apixaban use not recommended. ( 5.6 ) 5.1 Increased Risk of Thrombotic Events after Premature Discontinuation Premature discontinuation of any oral anticoagulant, including apixaban, in the absence of adequate alternative anticoagulation increases the risk of thrombotic events. An increased rate of stroke was observed during the transition from apixaban to warfarin in clinical trials in atrial fibrillation patients. If apixaban is discontinued for a reason other than pathological bleeding or completion of a course of therapy, consider coverage with another anticoagulant [see Dosage and Administration (2.4) and Clinical Studies (14.1) ] . 5.2 Bleeding Apixaban increases the risk of bleeding and can cause serious, potentially fatal, bleeding [see Dosage and Administration (2.1) and Adverse Reactions (6.1) ] . Concomitant use of drugs affecting hemostasis increases the risk of bleeding. These include aspirin and other antiplatelet agents, other anticoagulants, heparin, thrombolytic agents, selective serotonin reuptake inhibitors, serotonin norepinephrine reuptake inhibitors, and nonsteroidal anti-inflammatory drugs (NSAIDs) [see Drug Interactions (7.3) ] . Advise patients of signs and symptoms of blood loss and to report them immediately or go to an emergency room. Discontinue apixaban in patients with active pathological hemorrhage. Reversal of Anticoagulant Effect An agent to reverse the anti-factor Xa activity of apixaban is available. The pharmacodynamic effect of apixaban can be expected to persist for at least 24 hours after the last dose, i.e., for about two drug half-lives. Prothrombin complex concentrate (PCC), activated prothrombin complex concentrate or recombinant factor VIIa may be considered, but have not been evaluated in clinical studies [see Clinical Pharmacology (12.2) ] . When PCCs are used, monitoring for the anticoagulation effect of apixaban using a clotting test (PT, INR, or aPTT) or anti-factor Xa (FXa) activity is not useful and is not recommended. Activated oral charcoal reduces absorption of apixaban, thereby lowering apixaban plasma concentration [see Overdosage (10) ] . Hemodialysis does not appear to have a substantial impact on apixaban exposure [see Clinical Pharmacology (12.3) ] . Protamine sulfate and vitamin K are not expected to affect the anticoagulant activity of apixaban. There is no experience with antifibrinolytic agents (tranexamic acid, aminocaproic acid) in individuals receiving apixaban. There is no experience with systemic hemostatics (desmopressin) in individuals receiving apixaban, and they are not expected to be effective as a reversal agent. 5.3 Spinal/Epidural Anesthesia or Puncture When neuraxial anesthesia (spinal/epidural anesthesia) or spinal/epidural puncture is employed, patients treated with antithrombotic agents for prevention of thromboembolic complications are at risk of developing an epidural or spinal hematoma which can result in long-term or permanent paralysis. The risk of these events may be increased by the postoperative use of indwelling epidural catheters or the concomitant use of medicinal products affecting hemostasis. Indwelling epidural or intrathecal catheters should not be removed earlier than 24 hours after the last administration of apixaban. The next dose of apixaban should not be administered earlier than 5 hours after the removal of the catheter. The risk may also be increased by traumatic or repeated epidural or spinal puncture. If traumatic puncture occurs, delay the administration of apixaban for 48 hours. Monitor patients frequently for signs and symptoms of neurological impairment (e.g., numbness or weakness of the legs, or bowel or bladder dysfunction). If neurological compromise is noted, urgent diagnosis and treatment is necessary. Prior to neuraxial intervention the physician should consider the potential benefit versus the risk in anticoagulated patients or in patients to be anticoagulated for thromboprophylaxis. 5.4 Patients with Prosthetic Heart Valves The safety and efficacy of apixaban have not been studied in patients with prosthetic heart valves. Therefore, use of apixaban is not recommended in these patients. 5.5 Acute PE in Hemodynamically Unstable Patients or Patients who Require Thrombolysis or Pulmonary Embolectomy Initiation of apixaban is not recommended as an alternative to unfractionated heparin for the initial treatment of patients with PE who present with hemodynamic instability or who may receive thrombolysis or pulmonary embolectomy. 5.6 Increased Risk of Thrombosis in Patients with Triple Positive Antiphospholipid Syndrome Direct-acting oral anticoagulants (DOACs), including apixaban, are not recommended for use in patients with triple-positive antiphospholipid syndrome (APS). For patients with APS (especially those who are triple positive [positive for lupus anticoagulant, anticardiolipin, and anti–beta 2-glycoprotein I antibodies]), treatment with DOACs has been associated with increased rates of recurrent thrombotic events compared with vitamin K antagonist therapy. 5.1 Increased Risk of Thrombotic Events after Premature Discontinuation Premature discontinuation of any oral anticoagulant, including apixaban, in the absence of adequate alternative anticoagulation increases the risk of thrombotic events. An increased rate of stroke was observed during the transition from apixaban to warfarin in clinical trials in atrial fibrillation patients.
Side effects
The following clinically significant adverse reactions are discussed in greater detail in other sections of the prescribing information. Increased Risk of Thrombotic Events After Premature Discontinuation [see Warnings and Precautions (5.1) ]. Bleeding [see Warnings and Precautions (5.2) ]. Spinal/Epidural Anesthesia or Puncture [see Warnings and Precautions (5.3) ]. Most common adverse reactions (>1%) are related to bleeding. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Impax Laboratories, Inc. at 1-800-934-6729 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Reduction of Risk of Stroke and Systemic Embolism in Patients with Nonvalvular Atrial Fibrillation The safety of apixaban was evaluated in the ARISTOTLE and AVERROES studies [see Clinical Studies (14) ] , including 11,284 patients exposed to apixaban 5 mg twice daily and 602 patients exposed to apixaban 2.5 mg twice daily. The duration of apixaban exposure was ≥12 months for 9375 patients and ≥24 months for 3369 patients in the two studies. In ARISTOTLE, the mean duration of exposure was 89 weeks (>15,000 patient-years). In AVERROES, the mean duration of exposure was approximately 59 weeks (>3000 patient-years). The most common reason for treatment discontinuation in both studies was for bleeding-related adverse reactions; in ARISTOTLE this occurred in 1.7% and 2.5% of patients treated with apixaban and warfarin, respectively, and in AVERROES, in 1.5% and 1.3% on apixaban and aspirin, respectively. Bleeding in Patients with Nonvalvular Atrial Fibrillation in ARISTOTLE and AVERROES Tables 1 and 2 show the number of patients experiencing major bleeding during the treatment period and the bleeding rate (percentage of subjects with at least one bleeding event per 100 patient-years) in ARISTOTLE and AVERROES. Table 1: Bleeding Events in Patients with Nonvalvular Atrial Fibrillation in ARISTOTLE* Apixaban N=9088 n (per 100 pt-year) Warfarin N=9052 n (per 100 pt-year) Hazard Ratio (95% CI) P-value Major † 327 (2.13) 462 (3.09) 0.69 (0.60, 0.80) <0.0001 Intracranial (ICH) ‡ 52 (0.33) 125 (0.82) 0.41 (0.30, 0.57) - Hemorrhagic stroke § 38 (0.24) 74 (0.49) 0.51 (0.34, 0.75) - Other ICH 15 (0.10) 51 (0.34) 0.29 (0.16, 0.51) - Gastrointestinal (GI) ¶ 128 (0.83) 141 (0.93) 0.89 (0.70, 1.14) - Fatal** 10 (0.06) 37 (0.24) 0.27 (0.13, 0.53) - Intracranial 4 (0.03) 30 (0.20) 0.13 (0.05, 0.37) - Non-intracranial 6 (0.04) 7 (0.05) 0.84 (0.28, 2.15) - * Bleeding events within each subcategory were counted once per subject, but subjects may have contributed events to multiple endpoints. Bleeding events were counted during treatment or within 2 days of stopping study treatment (on-treatment period). † Defined as clinically overt bleeding accompanied by one or more of the following: a decrease in hemoglobin of ≥2 g/dL, a transfusion of 2 or more units of packed red blood cells, bleeding at a critical site: intracranial, intraspinal, intraocular, pericardial, intra-articular, intramuscular with compartment syndrome, retroperitoneal or with fatal outcome. ‡ Intracranial bleed includes intracerebral, intraventricular, subdural, and subarachnoid bleeding. Any type of hemorrhagic stroke was adjudicated and counted as an intracranial major bleed. § On-treatment analysis based on the safety population, compared to ITT analysis presented in Section 14. ¶ GI bleed includes upper GI, lower GI, and rectal bleeding. ** Fatal bleeding is an adjudicated death with the primary cause of death as intracranial bleeding or non-intracranial bleeding during the on-treatment period. In ARISTOTLE, the results for major bleeding were generally consistent across most major subgroups including age, weight, CHADS 2 score (a scale from 0 to 6 used to estimate risk of stroke, with higher scores predicting greater risk), prior warfarin use, geographic region, and aspirin use at randomization (Figure 1). Subjects treated with apixaban with diabetes bled more (3% per year) than did subjects without diabetes (1.9% per year). Figure 1: Major Bleeding Hazard Ratios by Baseline Characteristics – ARISTOTLE Study Note: The figure above presents effects in various subgroups, all of which are baseline characteristics and all of which were prespecified, if not the groupings. The 95% confidence limits that are shown do not take into account how many comparisons were made, nor do they reflect the effect of a particular factor after adjustment for all other factors. Apparent homogeneity or heterogeneity among groups should not be over-interpreted. Table 2: Bleeding Events in Patients with Nonvalvular Atrial Fibrillation in AVERROES Apixaban N=2798 n (%/year) Aspirin N=2780 n (%/year) Hazard Ratio (95% CI) P-value Major 45 (1.41) 29 (0.92) 1.54 (0.96, 2.45) 0.07 Fatal 5 (0.16) 5 (0.16) 0.99 (0.23, 4.29) - Intracranial 11 (0.34) 11 (0.35) 0.99 (0.39, 2.51) - Events associated with each endpoint were counted once per subject, but subjects may have contributed events to multiple endpoints. ARISTOTLE Major Bleeding Forest Plot Other Adverse Reactions Hypersensitivity reactions (including drug hypersensitivity, such as skin rash, and anaphylactic reactions, such as allergic edema) and syncope were reported in <1% of patients receiving apixaban. Prophylaxis of Deep Vein Thrombosis Following Hip or Knee Replacement Surgery The safety of apixaban has been evaluated in 1 Phase II and 3 Phase III studies including 5924 patients exposed to apixaban 2.5 mg twice daily undergoing major orthopedic surgery of the lower limbs (elective hip replacement or elective knee replacement) treated for up to 38 days. In total, 11% of the patients treated with apixaban 2.5 mg twice daily experienced adverse reactions.
Drug interactions
Apixaban is a substrate of both CYP3A4 and P-gp. Inhibitors of CYP3A4 and P-gp increase exposure to apixaban and increase the risk of bleeding. Inducers of CYP3A4 and P-gp decrease exposure to apixaban and increase the risk of stroke and other thromboembolic events. Combined P-gp and strong CYP3A4 inhibitors increase blood levels of apixaban. Reduce apixaban dose or avoid coadministration. (2.5 , 7.1 , 12.3) Simultaneous use of combined P-gp and strong CYP3A4 inducers reduces blood levels of apixaban: Avoid concomitant use. (7.2 , 12.3) 7.1 Combined P-gp and Strong CYP3A4 Inhibitors For patients receiving apixaban 5 mg or 10 mg twice daily, the dose of apixaban should be decreased by 50% when co-administered with drugs that are combined P-gp and strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir) [see Dosage and Administration (2.5) and Clinical Pharmacology (12.3) ] . For patients receiving apixaban at a dose of 2.5 mg twice daily, avoid co-administration with combined P-gp and strong CYP3A4 inhibitors [see Dosage and Administration (2.5) and Clinical Pharmacology (12.3) ] . Clarithromycin Although clarithromycin is a combined P-gp and strong CYP3A4 inhibitor, pharmacokinetic data suggest that no dose adjustment is necessary with concomitant administration with apixaban [see Clinical Pharmacology (12.3)]. 7.2 Combined P-gp and Strong CYP3A4 Inducers Avoid concomitant use of apixaban with combined P-gp and strong CYP3A4 inducers (e.g., rifampin, carbamazepine, phenytoin, St. John’s wort) because such drugs will decrease exposure to apixaban [see Clinical Pharmacology (12.3) ] . 7.3 Anticoagulants and Antiplatelet Agents Co-administration of antiplatelet agents, fibrinolytics, heparin, aspirin, and chronic NSAID use increases the risk of bleeding. APPRAISE-2, a placebo-controlled clinical trial of apixaban in high-risk, post-acute coronary syndrome patients treated with aspirin or the combination of aspirin and clopidogrel, was terminated early due to a higher rate of bleeding with apixaban compared to placebo. The rate of ISTH major bleeding was 2.8% per year with apixaban versus 0.6% per year with placebo in patients receiving single antiplatelet therapy and was 5.9% per year with apixaban versus 2.5% per year with placebo in those receiving dual antiplatelet therapy. In ARISTOTLE, concomitant use of aspirin increased the bleeding risk on apixaban from 1.8% per year to 3.4% per year and concomitant use of aspirin and warfarin increased the bleeding risk from 2.7% per year to 4.6% per year. In this clinical trial, there was limited (2.3%) use of dual antiplatelet therapy with apixaban. 7.1 Combined P-gp and Strong CYP3A4 Inhibitors For patients receiving apixaban 5 mg or 10 mg twice daily, the dose of apixaban should be decreased by 50% when co-administered with drugs that are combined P-gp and strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir) [see Dosage and Administration (2.5) and Clinical Pharmacology (12.3) ] . For patients receiving apixaban at a dose of 2.5 mg twice daily, avoid co-administration with combined P-gp and strong CYP3A4 inhibitors [see Dosage and Administration (2.5) and Clinical Pharmacology (12.3) ] . Clarithromycin Although clarithromycin is a combined P-gp and strong CYP3A4 inhibitor, pharmacokinetic data suggest that no dose adjustment is necessary with concomitant administration with apixaban [see Clinical Pharmacology (12.3)]. 7.2 Combined P-gp and Strong CYP3A4 Inducers Avoid concomitant use of apixaban with combined P-gp and strong CYP3A4 inducers (e.g., rifampin, carbamazepine, phenytoin, St. John’s wort) because such drugs will decrease exposure to apixaban [see Clinical Pharmacology (12.3) ] . 7.3 Anticoagulants and Antiplatelet Agents Co-administration of antiplatelet agents, fibrinolytics, heparin, aspirin, and chronic NSAID use increases the risk of bleeding. APPRAISE-2, a placebo-controlled clinical trial of apixaban in high-risk, post-acute coronary syndrome patients treated with aspirin or the combination of aspirin and clopidogrel, was terminated early due to a higher rate of bleeding with apixaban compared to placebo. The rate of ISTH major bleeding was 2.8% per year with apixaban versus 0.6% per year with placebo in patients receiving single antiplatelet therapy and was 5.9% per year with apixaban versus 2.5% per year with placebo in those receiving dual antiplatelet therapy. In ARISTOTLE, concomitant use of aspirin increased the bleeding risk on apixaban from 1.8% per year to 3.4% per year and concomitant use of aspirin and warfarin increased the bleeding risk from 2.7% per year to 4.6% per year. In this clinical trial, there was limited (2.3%) use of dual antiplatelet therapy with apixaban.
Use in specific populations
Pregnancy: Not recommended. (8.1) Lactation: Discontinue drug or discontinue nursing. (8.2) Severe Hepatic Impairment: Not recommended. (8.7 , 12.2) 8.1 Pregnancy Risk Summary The limited available data on apixaban use in pregnant women are insufficient to inform drug-associated risks of major birth defects, miscarriage, or adverse developmental outcomes. Treatment may increase the risk of bleeding during pregnancy and delivery. In animal reproduction studies, no adverse developmental effects were seen when apixaban was administered to rats (orally), rabbits (intravenously) and mice (orally) during organogenesis at unbound apixaban exposure levels up to 4, 1 and 19 times, respectively, the human exposure based on area under plasma-concentration time curve (AUC) at the Maximum Recommended Human Dose (MRHD) of 5 mg twice daily. The estimated background risk of major birth defects and miscarriage for the indicated populations is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Pregnancy confers an increased risk of thromboembolism that is higher for women with underlying thromboembolic disease and certain high-risk pregnancy conditions. Published data describe that women with a previous history of venous thrombosis are at high risk for recurrence during pregnancy. Fetal/Neonatal adverse reactions Use of anticoagulants, including apixaban, may increase the risk of bleeding in the fetus and neonate. Labor or delivery All patients receiving anticoagulants, including pregnant women, are at risk for bleeding. Apixaban use during labor or delivery in women who are receiving neuraxial anesthesia may result in epidural or spinal hematomas. Consider use of a shorter acting anticoagulant as delivery approaches [see Warnings and Precautions (5.3)] . Data Animal Data No developmental toxicities were observed when apixaban was administered during organogenesis to rats (orally), rabbits (intravenously) and mice (orally) at unbound apixaban exposure levels 4, 1, and 19 times, respectively, the human exposures at the MRHD. There was no evidence of fetal bleeding, although conceptus exposure was confirmed in rats and rabbits. Oral administration of apixaban to rat dams from gestation day 6 through lactation day 21 at maternal unbound apixaban exposures ranging from 1.4 to 5 times the human exposures at the MRHD was not associated with reduced maternal mortality or reduced conceptus/neonatal viability, although increased incidences of peri-vaginal bleeding were observed in dams at all doses. There was no evidence of neonatal bleeding. 8.2 Lactation Risk Summary There are no data on the presence of apixaban or its metabolites in human milk, the effects on the breastfed child, or the effects on milk production. Apixaban and/or its metabolites were present in the milk of rats (see Data) . Because human exposure through milk is unknown, breastfeeding is not recommended during treatment with apixaban. Data Animal Data Maximal plasma concentrations were observed after 30 minutes following a single oral administration of a 5 mg dose to lactating rats. Maximal milk concentrations were observed 6 hours after dosing. The milk to plasma AUC (0-24) ratio is 30:1 indicating that apixaban can accumulate in milk. The concentrations of apixaban in animal milk does not necessarily predict the concentration of drug in human milk. 8.3 Females and Males of Reproductive Potential Females of reproductive potential requiring anticoagulation should discuss pregnancy planning with their physician. The risk of clinically significant uterine bleeding, potentially requiring gynecological surgical interventions, identified with oral anticoagulants including apixaban should be assessed in females of reproductive potential and those with abnormal uterine bleeding. 8.4 Pediatric Use Safety and effectiveness in pediatric patients have not been established. 8.5 Geriatric Use Of the total subjects in the ARISTOTLE and AVERROES clinical studies, >69% were 65 years of age and older, and >31% were 75 years of age and older. In the ADVANCE-1, ADVANCE-2, and ADVANCE-3 clinical studies, 50% of subjects were 65 years of age and older, while 16% were 75 years of age and older. In the AMPLIFY and AMPLIFY-EXT clinical studies, >32% of subjects were 65 years of age and older and >13% were 75 years of age and older. No clinically significant differences in safety or effectiveness were observed when comparing subjects in different age groups. 8.6 Renal Impairment Reduction of Risk of Stroke and Systemic Embolism in Patients with Nonvalvular Atrial Fibrillation The recommended dose is 2.5 mg twice daily in patients with at least two of the following characteristics [see Dosage and Administration (2.1) ] : age greater than or equal to 80 years body weight less than or equal to 60 kg serum creatinine greater than or equal to 1.5 mg/dL Patients with End-Stage Renal Disease on Dialysis Clinical efficacy and safety studies with apixaban did not enroll patients with end-stage renal disease (ESRD) on dialysis. In patients with ESRD maintained on intermittent hemodialysis, administration of apixaban at the usually recommended dose [see Dosage and Administration (2.1) ] will result in concentrations of apixaban and pharmacodynamic activity similar to those observed in the ARISTOTLE study [see Clinical Pharmacology (12.3) ] . It is not known whether these concentrations will lead to similar stroke reduction and bleeding risk in patients with ESRD on dialysis as was seen in ARISTOTLE.
Pregnancy
8.1 Pregnancy Risk Summary The limited available data on apixaban use in pregnant women are insufficient to inform drug-associated risks of major birth defects, miscarriage, or adverse developmental outcomes. Treatment may increase the risk of bleeding during pregnancy and delivery. In animal reproduction studies, no adverse developmental effects were seen when apixaban was administered to rats (orally), rabbits (intravenously) and mice (orally) during organogenesis at unbound apixaban exposure levels up to 4, 1 and 19 times, respectively, the human exposure based on area under plasma-concentration time curve (AUC) at the Maximum Recommended Human Dose (MRHD) of 5 mg twice daily. The estimated background risk of major birth defects and miscarriage for the indicated populations is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Pregnancy confers an increased risk of thromboembolism that is higher for women with underlying thromboembolic disease and certain high-risk pregnancy conditions. Published data describe that women with a previous history of venous thrombosis are at high risk for recurrence during pregnancy. Fetal/Neonatal adverse reactions Use of anticoagulants, including apixaban, may increase the risk of bleeding in the fetus and neonate. Labor or delivery All patients receiving anticoagulants, including pregnant women, are at risk for bleeding. Apixaban use during labor or delivery in women who are receiving neuraxial anesthesia may result in epidural or spinal hematomas. Consider use of a shorter acting anticoagulant as delivery approaches [see Warnings and Precautions (5.3)] . Data Animal Data No developmental toxicities were observed when apixaban was administered during organogenesis to rats (orally), rabbits (intravenously) and mice (orally) at unbound apixaban exposure levels 4, 1, and 19 times, respectively, the human exposures at the MRHD. There was no evidence of fetal bleeding, although conceptus exposure was confirmed in rats and rabbits. Oral administration of apixaban to rat dams from gestation day 6 through lactation day 21 at maternal unbound apixaban exposures ranging from 1.4 to 5 times the human exposures at the MRHD was not associated with reduced maternal mortality or reduced conceptus/neonatal viability, although increased incidences of peri-vaginal bleeding were observed in dams at all doses. There was no evidence of neonatal bleeding.
Pediatric use
8.4 Pediatric Use Safety and effectiveness in pediatric patients have not been established.
Geriatric use
8.5 Geriatric Use Of the total subjects in the ARISTOTLE and AVERROES clinical studies, >69% were 65 years of age and older, and >31% were 75 years of age and older. In the ADVANCE-1, ADVANCE-2, and ADVANCE-3 clinical studies, 50% of subjects were 65 years of age and older, while 16% were 75 years of age and older. In the AMPLIFY and AMPLIFY-EXT clinical studies, >32% of subjects were 65 years of age and older and >13% were 75 years of age and older. No clinically significant differences in safety or effectiveness were observed when comparing subjects in different age groups.
Overdosage
Overdose of apixaban tablets increases the risk of bleeding [see Warnings and Precautions (5.2) ] . In controlled clinical trials, orally administered apixaban in healthy subjects at doses up to 50 mg daily for 3 to 7 days (25 mg twice daily for 7 days or 50 mg once daily for 3 days) had no clinically relevant adverse effects. In healthy subjects, administration of activated charcoal 2 and 6 hours after ingestion of a 20-mg dose of apixaban reduced mean apixaban AUC by 50% and 27%, respectively. Thus, administration of activated charcoal may be useful in the management of apixaban overdose or accidental ingestion. An agent to reverse the anti-factor Xa activity of apixaban is available.
Description
Apixaban, a factor Xa (FXa) inhibitor, is chemically described as 1-(4-methoxyphenyl)-7-oxo-6-[4-(2-oxopiperidin-1-yl)phenyl]-4,5,6,7-tetrahydro-1 H -pyrazolo[3,4- c ]pyridine-3-carboxamide. Its molecular formula is C 25 H 25 N 5 O 4 , which corresponds to a molecular weight of 459.5. Apixaban has the following structural formula: Apixaban is a white to pale-yellow powder. At physiological pH (1.2–6.8), apixaban does not ionize; its aqueous solubility across the physiological pH range is ~0.04 mg/mL. Apixaban tablets are available for oral administration in strengths of 2.5 mg and 5 mg of apixaban with the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, sodium lauryl sulfate, and magnesium stearate. The film coating contains hypromellose, lactose monohydrate, titanium dioxide, triacetin, and iron oxide yellow (2.5 mg tablets) or iron oxide red (5 mg tablets). Apixaban Chemical Structure
Mechanism of action
12.1 Mechanism of Action Apixaban is a selective inhibitor of FXa. It does not require antithrombin III for antithrombotic activity. Apixaban inhibits free and clot-bound FXa, and prothrombinase activity. Apixaban has no direct effect on platelet aggregation, but indirectly inhibits platelet aggregation induced by thrombin. By inhibiting FXa, apixaban decreases thrombin generation and thrombus development.
How supplied
How Supplied Apixaban tablets are available as listed in the table below. Tablet Strength Tablet Color/Shape Tablet Markings Package Size NDC Code 2.5 mg Yellow, round, biconvex Debossed with “M” on one side and “2.5” on the other side Bottles of 60 Bottles of 1000 Hospital Unit-Dose Blister Package of 100 0115-1721-13 0115-1721-03 0115-1721-01 5 mg Pink, oval, biconvex Debossed with “M” on one side and “5” on the other side Bottles of 60 Bottles of 1000 Hospital Unit-Dose Blister Package of 100 0115-1722-13 0115-1722-03 0115-1722-01 Storage and Handling Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C and 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. How Supplied Apixaban tablets are available as listed in the table below. Tablet Strength Tablet Color/Shape Tablet Markings Package Size NDC Code 2.5 mg Yellow, round, biconvex Debossed with “M” on one side and “2.5” on the other side Bottles of 60 Bottles of 1000 Hospital Unit-Dose Blister Package of 100 0115-1721-13 0115-1721-03 0115-1721-01 5 mg Pink, oval, biconvex Debossed with “M” on one side and “5” on the other side Bottles of 60 Bottles of 1000 Hospital Unit-Dose Blister Package of 100 0115-1722-13 0115-1722-03 0115-1722-01 How Supplied Apixaban tablets are available as listed in the table below. Tablet Strength Tablet Color/Shape Tablet Markings Package Size NDC Code 2.5 mg Yellow, round, biconvex Debossed with “M” on one side and “2.5” on the other side Bottles of 60 Bottles of 1000 Hospital Unit-Dose Blister Package of 100 0115-1721-13 0115-1721-03 0115-1721-01 5 mg Pink, oval, biconvex Debossed with “M” on one side and “5” on the other side Bottles of 60 Bottles of 1000 Hospital Unit-Dose Blister Package of 100 0115-1722-13 0115-1722-03 0115-1722-01
Storage
Storage and Handling Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C and 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. Storage and Handling Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C and 30°C (59°F to 86°F) [see USP Controlled Room Temperature].
Patient information
Advise patients to read the FDA-approved patient labeling (Medication Guide). Advise patients of the following: Not to discontinue apixaban tablets without talking to their physician first. That it might take longer than usual for bleeding to stop, and they may bruise or bleed more easily when treated with apixaban tablets. Advise patients about how to recognize bleeding or symptoms of hypovolemia and of the urgent need to report any unusual bleeding to their physician. To tell their physicians and dentists they are taking apixaban tablets, and/or any other product known to affect bleeding (including nonprescription products, such as aspirin or NSAIDs), before any surgery or medical or dental procedure is scheduled and before any new drug is taken. If the patient is having neuraxial anesthesia or spinal puncture, inform the patient to watch for signs and symptoms of spinal or epidural hematomas [see Warnings and Precautions (5.3) ] . If any of these symptoms occur, advise the patient to seek emergent medical attention. To tell their physicians if they are pregnant or plan to become pregnant or are breastfeeding or intend to breastfeed during treatment with apixaban tablets [see Use in Specific Populations (8.1 , 8.2) ] . How to take apixaban tablets if they cannot swallow, or require a nasogastric tube [see Dosage and Administration (2.6) ] . What to do if a dose is missed [see Dosage and Administration (2.2) ].
Label text from the FDA structured product label by Amneal Pharmaceuticals of New York LLC (revised May 23, 2024). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Apixaban in 4 products
Apixaban NDC products (4)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 0115-1721 | Apixaban 2.5 mg/1 Tablet, Film Coated | Amneal Pharmaceuticals of New York LLC | ANDA |
| 0115-1722 | Apixaban 5 mg/1 Tablet, Film Coated | Amneal Pharmaceuticals of New York LLC | ANDA |
| 14445-149 | Apixaban 2.5 mg/1 Tablet, Film Coated | Indoco Remedies Limited | ANDA |
| 14445-150 | Apixaban 5 mg/1 Tablet, Film Coated | Indoco Remedies Limited | ANDA |
Frequently asked questions
What is Apixaban used for?
Apixaban tablets are a factor Xa inhibitor indicated: to reduce the risk of stroke and systemic embolism in patients with nonvalvular atrial fibrillation. (1.1) for the prophylaxis of deep vein thrombosis (DVT), which may lead to pulmonary embolism (PE), in patients who have undergone hip or knee replacement surgery. (1.2) for the treatment of DVT and PE, and for the reduction in the risk of…
What are the side effects of Apixaban?
The following clinically significant adverse reactions are discussed in greater detail in other sections of the prescribing information. Increased Risk of Thrombotic Events After Premature Discontinuation [see Warnings and Precautions (5.1) ]. Bleeding [see Warnings and Precautions (5.2) ]. Spinal/Epidural Anesthesia or Puncture [see Warnings and Precautions (5.3) ]. Most common adverse reactions… See the full label for the complete list.
Who makes Apixaban?
Apixaban is listed by 2 labelers in the FDA NDC directory, including Amneal Pharmaceuticals of New York LLC, Indoco Remedies Limited.