Rivaroxaban

Warnings and Precautions ( 5.2 ) 06/2025

1 INDICATIONS & USAGE Rivaroxaban for oral suspension is a factor Xa inhibitor indicated: for treatment of VTE and reduction in the risk of recurrent VTE in pediatric patients from birth to less than 18 years ( 1.9) for thromboprophylaxis in pediatric patients 2 years and older with congenital heart disease after the Fontan procedure ( 1.10 ) 1.9 Treatment of Venous Thromboembolism and Reduction in Risk of Recurrent Venous Thromboembolism in Pediatric Patients Rivaroxaban for oral suspension is indicated for the treatment of venous thromboembolism (VTE) and the reduction in the risk of recurrent VTE in pediatric patients from birth to less than 18 years after at least 5 days of initial parenteral anticoagulant treatment. 1.10 Thromboprophylaxis in Pediatric Patients with Congenital Heart Disease after the Fontan Procedure Rivaroxaban for oral suspension is indicated for thromboprophylaxis in pediatric patients aged 2 years and older with congenital heart disease who have undergone the Fontan procedure.

2 DOSAGE & ADMINISTRATION Nonvalvular Atrial Fibrillation : 15 or 20 mg, once daily with food Treatment of DVT and/or PE : 15 mg orally twice daily with food for the first 21 days followed by 20 mg orally once daily with food for the remaining treatment Reduction in the Risk of Recurrence of DVT and/or PE in patients at continued risk for DVT and/or PE : 10 mg once daily with or without food, after at least 6 months of standard anticoagulant treatment Prophylaxis of DVT Following Hip or Knee Replacement Surgery : 10 mg orally once daily with or without food Prophylaxis of VTE in Acutely Ill Medical Patients at Risk for Thromboembolic Complications Not at High Risk of Bleeding : 10 mg once daily, with or without food, in hospital and after hospital discharge for a total recommended duration of 31 to 39 days CAD or PAD : 2.5 mg orally twice daily with or without food, in combination with aspirin (75 to 100 mg) once daily Pediatric Patients: See dosing recommendations in the Full Prescribing Information ( 2.2) 2.2 Recommended Dosage in Pediatric Patients Treatment of Venous Thromboembolism and Reduction in Risk of Recurrent Venous Thromboembolism in Pediatric Patients Table 2: Recommended Dosage in Pediatric Patients Birth to Less than 18 Years for Treatment of and Reduction in Risk of Recurrent VTE *,† Dosage Form Body Weight 1 mg Rivaroxaban for oral suspension = 1 mL Suspension Dosage Total Daily Dose ‡ Once a Day § 2 Times a Day § 3 Times a Day § Oral Suspension Only 2.6 kg to 2.9 kg 0.8 mg 2.4 mg 3 kg to 3.9 kg 0.9 mg 2.7 mg 4 kg to 4.9 kg 1.4 mg 4.2 mg 5 kg to 6.9 kg 1.6 mg 4.8 mg 7 kg to 7.9 kg 1.8 mg 5.4 mg 8 kg to 8.9 kg 2.4 mg 7.2 mg 9 kg to 9.9 kg 2.8 mg 8.4 mg 10 kg to 11.9 kg 3 mg 9 mg 12 kg to 29.9 kg 5 mg 10 mg Oral Suspension 30 kg to 49.9 kg 15 mg 15 mg ≥50 kg 20 mg 20 mg * Initiate rivaroxaban for oral suspension treatment following at least 5 days of initial parenteral anticoagulation therapy. † Patients less than 6 months of age should meet the following criteria: at birth were at least 37 weeks of gestation, have had at least 10 days of oral feeding, and weigh ≥2.6 kg at the time of dosing. ‡ All doses should be taken with feeding or with food since exposures match that of 20 mg daily dose in adults. § Once a day: approximately 24 hours apart; 2 times a day: approximately 12 hours apart; 3 times a day: approximately 8 hours apart Dosing of rivaroxaban for oral suspension was not studied and therefore dosing cannot be reliably determined in the following patient populations. Its use is therefore not recommended in children less than 6 months of age with any of the following: Less than 37 weeks of gestation at birth Less than 10 days of oral feeding Body weight of less than 2.6 kg. To increase absorption, all doses should be taken with feeding or with food. Monitor the child’s weight and review the dose regularly, especially for children below 12 kg. This is to ensure a therapeutic dose is maintained. All pediatric patients (except less than 2 years old with catheter-related thrombosis): Therapy with rivaroxaban for oral suspension should be continued for at least 3 months in children with thrombosis. Treatment can be extended up to 12 months when clinically necessary. The benefit of continued therapy beyond 3 months should be assessed on an individual basis taking into account the risk for recurrent thrombosis versus the potential risk of bleeding. Pediatric patients less than 2 years old with catheter-related thrombosis: Therapy with rivaroxaban for oral suspension should be continued for at least 1 month in children less than 2 years old with catheter-related thrombosis. Treatment can be extended up to 3 months when clinically necessary. The benefit of continued therapy beyond 1 month should be assessed on an individual basis taking into account the risk for recurrent thrombosis versus the potential risk of bleeding. Thromboprophylaxis in Pediatric Patients with Congenital Heart Disease after the Fontan Proc …

3 DOSAGE FORMS & STRENGTHS For oral suspension: White/off white to yellowish granular powder; once reconstituted, provide flavored white to off-white opaque liquid with a concentration of 1 mg/mL. For oral suspension: 1 mg/mL once reconstituted ( 3 )

4 CONTRAINDICATIONS Rivaroxaban is contraindicated in patients with: active pathological bleeding [see Warnings and Precautions (5.2) ] severe hypersensitivity reaction to rivaroxaban for oral suspension (e.g., anaphylactic reactions) [see Adverse Reactions (6.2) ] Active pathological bleeding ( 4 ) Severe hypersensitivity reaction to rivaroxaban for oral suspension ( 4 )

6 ADVERSE REACTIONS The following clinically significant adverse reactions are also discussed in other sections of the labeling: Increased Risk of Stroke After Discontinuation in Another Indication [see Boxed Warning and Warnings and Precautions ( 5.1 )] Bleeding Risk [see Warnings and Precautions ( 5.2 , 5.4 , 5.5 , 5.6 , 5.7 )] Spinal/Epidural Hematoma [see Boxed Warning and Warnings and Precautions ( 5.3 )] The most common adverse reactions (greater than 10%) in pediatric patients were bleeding, cough, vomiting, and gastroenteritis. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Ascend Laboratories, LLC at 1-877-272-7901 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 clinical practice. Pediatric Patients Treatment of Venous Thromboembolism and Reduction in Risk of Recurrent Venous Thromboembolism in Pediatric Patients The safety assessment is based on data from the EINSTEIN Junior Phase 3 study in 491 patients from birth to less than 18 years of age. Patients were randomized 2:1 to receive body weight- adjusted doses of rivaroxaban or comparator (unfractionated heparin, low molecular weight heparin, fondaparinux or VKA). Discontinuation due to bleeding events occurred in 6 (1.8%) patients in the rivaroxaban group and 3 (1.9%) patients in the comparator group. Table 14 shows the number of patients experiencing bleeding events in the EINSTEIN Junior study. In female patients who had experienced menarche, ages 12 to less than 18 years of age, menorrhagia occurred in 23 (27%) female patients in the rivaroxaban group and 5 (10%) female patients in the comparator group. Table 14: Bleeding Events in EINSTEIN Junior Study – Safety Analysis Set - Main Treatment Period* Parameter Rivaroxaban † N=329 n (%) Comparator Group ‡ N=162 n (%) Major bleeding § 0 2 (1.2) Clinically relevant non-major bleeding ¶ 10 (3.0) 1 (0.6) Trivial bleeding 113 (34.3) 44 (27.2) Any bleeding 119 (36.2) 45 (27.8) * These events occurred after randomization until 3 months of treatment (1 month for patients less than 2 years with central venous catheter-related VTE (CVC-VTE). Patients may have more than one event. † Treatment schedule: body weight-adjusted doses of rivaroxaban; randomized 2:1 (Rivaroxaban: Comparator). ‡ Unfractionated heparin (UFH), low molecular weight heparin (LMWH), fondaparinux or VKA. § Defined as clinically overt bleeding associated with a decrease in hemoglobin of ≥2 g/dL, a transfusion of ≥2 units of packed red blood cells or whole blood, bleeding at a critical site, or with a fatal outcome. ¶ Defined as clinically overt bleeding, which did not meet the criteria for major bleeding, but was associated with medical intervention, unscheduled contact with a physician, temporary cessation of treatment, discomfort for the patient, or impairment of activities of daily life. Non-bleeding adverse reactions reported in ≥5% of rivaroxaban-treated patients are shown in Table 15. Table 15: Other Adverse Reactions * Reported in Rivaroxaban-Treated Patients by ≥5% in EINSTEIN Junior Study Adverse Reaction Rivaroxaban N=329 n (%) Comparator Group N=162 n (%) Pain in extremity 23 (7) 7 (4.3) Fatigue † 23 (7) 7 (4.3) * Adverse reaction with Relative Risk greater than 1.5 for rivaroxaban versus comparator. † The following terms were combined: fatigue, asthenia. A clinically relevant adverse reaction in rivaroxaban-treated patients was vomiting (10.6% in the rivaroxaban group vs 8% in the comparator group). Thromboprophylaxis in Pediatric Patients with Congenital Heart Disease (CHD) after the Fontan Procedure The data below are based on Part B of the UNIVERSE study which was designed to evaluate the safety and efficacy of rivaroxaban for thromboprophylaxis in 98 …

7 DRUG INTERACTIONS Avoid combined P-gp and strong CYP3A inhibitors and inducers ( 7.2 , 7.3) Anticoagulants: Avoid concomitant use ( 7.4 ) 7.1 General Inhibition and Induction Properties Rivaroxaban is a substrate of CYP3A4/5, CYP2J2, and the P-gp and ATP-binding cassette G2 (ABCG2) transporters. Combined P-gp and strong CYP3A inhibitors increase exposure to rivaroxaban and may increase the risk of bleeding. Combined P-gp and strong CYP3A inducers decrease exposure to rivaroxaban and may increase the risk of thromboembolic events. 7.2 Drugs that Inhibit Cytochrome P450 3A Enzymes and Drug Transport Systems Interaction with Combined P-gp and Strong CYP3A Inhibitors Avoid concomitant administration of rivaroxaban with known combined P-gp and strong CYP3A inhibitors (e.g., ketoconazole and ritonavir) [see Warnings and Precautions (5.6) and Clinical Pharmacology (12.3)] . Although clarithromycin is a combined P-gp and strong CYP3A inhibitor, pharmacokinetic data suggests that no precautions are necessary with concomitant administration with rivaroxaban as the change in exposure is unlikely to affect the bleeding risk [see Clinical Pharmacology (12.3) ] . Interaction with Combined P-gp and Moderate CYP3A Inhibitors in Patients with Renal Impairment Rivaroxaban should not be used in patients with CrCl 15 to less than 80 mL/min who are receiving concomitant combined P-gp and moderate CYP3A inhibitors (e.g., erythromycin) unless the potential benefit justifies the potential risk [see Warnings and Precautions (5.4) and Clinical Pharmacology (12.3) ] . 7.3 Drugs that Induce Cytochrome P450 3A Enzymes and Drug Transport Systems Avoid concomitant use of rivaroxaban with drugs that are combined P-gp and strong CYP3A inducers (e.g., carbamazepine, phenytoin, rifampin, St. John’s wort) [see Warnings and Precautions (5.6) and Clinical Pharmacology (12.3) ] . 7.4 Anticoagulants and NSAIDs/Aspirin Coadministration of enoxaparin, warfarin, aspirin, clopidogrel and chronic NSAID use may increase the risk of bleeding [see Clinical Pharmacology (12.3) ]. Avoid concurrent use of rivaroxaban with other anticoagulants due to increased bleeding risk unless benefit outweighs risk. Promptly evaluate any signs or symptoms of blood loss if patients are treated concomitantly with aspirin, other platelet aggregation inhibitors, or NSAIDs [see Warnings and Precautions (5.2) ] .

8 USE IN SPECIFIC POPULATIONS Renal impairment: Avoid or adjust dose ( 8.6 ) Hepatic impairment: Avoid use in Child-Pugh B and C hepatic impairment or hepatic disease associated with coagulopathy ( 8.7 ) 8.1 Pregnancy Risk Summary The limited available data on rivaroxaban in pregnant women are insufficient to inform a drug- associated risk of adverse developmental outcomes. Use rivaroxaban with caution in pregnant patients because of the potential for pregnancy related hemorrhage and/or emergent delivery. The anticoagulant effect of rivaroxaban cannot be reliably monitored with standard laboratory testing. Consider the benefits and risks of rivaroxaban for the mother and possible risks to the fetus when prescribing rivaroxaban to a pregnant woman [see Warnings and Precautions ( 5.2 , 5.7 )] . Adverse outcomes in pregnancy occur regardless of the health of the mother or the use of medications. The estimated background risk of major birth defects and miscarriage for the indicated populations is unknown. 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 is a risk factor for venous thromboembolism and that risk is increased in women with inherited or acquired thrombophilias. Pregnant women with thromboembolic disease have an increased risk of maternal complications including pre-eclampsia. Maternal thromboembolic disease increases the risk for intrauterine growth restriction, placental abruption and early and late pregnancy loss. Fetal/Neonatal Adverse Reactions Based on the pharmacologic activity of Factor Xa inhibitors and the potential to cross the placenta, bleeding may occur at any site in the fetus and/or neonate. Labor or Delivery All patients receiving anticoagulants, including pregnant women, are at risk for bleeding and this risk may be increased during labor or delivery [see Warnings and Precautions (5.7) ]. The risk of bleeding should be balanced with the risk of thrombotic events when considering the use of rivaroxaban in this setting. Data Human Data There are no adequate or well-controlled studies of rivaroxaban in pregnant women, and dosing for pregnant women has not been established. Post-marketing experience is currently insufficient to determine a rivaroxaban-associated risk for major birth defects or miscarriage. In an in vitro placenta perfusion model, unbound rivaroxaban was rapidly transferred across the human placenta. Animal Data Rivaroxaban crosses the placenta in animals. Rivaroxaban increased fetal toxicity (increased resorptions, decreased number of live fetuses, and decreased fetal body weight) when pregnant rabbits were given oral doses of ≥10 mg/kg rivaroxaban during the period of organogenesis. This dose corresponds to about 4 times the human exposure of unbound drug, based on AUC comparisons at the highest recommended human dose of 20 mg/day. Fetal body weights decreased when pregnant rats were given oral doses of 120 mg/kg during the period of organogenesis. This dose corresponds to about 14 times the human exposure of unbound drug. In rats, peripartal maternal bleeding and maternal and fetal death occurred at the rivaroxaban dose of 40 mg/kg (about 6 times maximum human exposure of the unbound drug at the human dose of 20 mg/day). 8.2 Lactation Risk Summary Rivaroxaban has been detected in human milk. There are insufficient data to determine the effects of rivaroxaban on the breastfed child or on milk production. Rivaroxaban and/or its metabolites were present in the milk of rats. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for rivaroxaban and any potential adverse effects on the breastfed infant from rivaroxaban or from the underlying maternal condition (see Data) . Data Animal Data Following a single oral administ …

12.1 Mechanism of Action Rivaroxaban is a selective inhibitor of FXa. It does not require a cofactor (such as Anti-thrombin III) for activity. Rivaroxaban inhibits free FXa and prothrombinase activity. Rivaroxaban has no direct effect on platelet aggregation, but indirectly inhibits platelet aggregation induced by thrombin. By inhibiting FXa, rivaroxaban decreases thrombin generation.

11 DESCRIPTION Rivaroxaban, a factor Xa (FXa) inhibitor, is the active ingredient in rivaroxaban for oral suspension with the chemical name 5-Chloro-N-({(5S)-2-oxo-3-[4-(3-oxo- 4-morpholinyl)phenyl]-1,3-oxazolidin-5-yl}methyl)-2-thiophenecarboxamide. The molecular formula of rivaroxaban is C 19 H 18 ClN 3 O 5 S and the molecular weight is 435.89. The structural formula is: Rivaroxaban USP is a pure ( S )-enantiomer. It is a non-hygroscopic, white to yellowish powder. Rivaroxaban is sparingly soluble in dimethyl formamide and is practically insoluble in water. Rivaroxaban for oral suspension is supplied as granules in bottles containing 155 mg of rivaroxaban (1 mg of rivaroxaban per mL after reconstitution). The inactive ingredients are: anhydrous citric acid, hypromellose, mannitol, microcrystalline cellulose and carboxymethylcellulose sodium, sodium benzoate, sucralose, cream/vanilla flavor and xanthan gum. riva-str-u

10 OVERDOSAGE Overdose of rivaroxaban may lead to hemorrhage. Discontinue rivaroxaban and initiate appropriate therapy if bleeding complications associated with overdosage occur. Rivaroxaban systemic exposure is not further increased at single doses less than 50 mg due to limited absorption. The use of activated charcoal to reduce absorption in case of rivaroxaban overdose may be considered. Due to the high plasma protein binding, rivaroxaban is not dialyzable [see Warnings and Precautions (5.2) and Clinical Pharmacology (12.3) ] . Partial reversal of laboratory anticoagulation parameters may be achieved with use of plasma products. An agent to reverse the anti-factor Xa activity of rivaroxaban is available.

16 HOW SUPPLIED/STORAGE AND HANDLING Rivaroxaban for oral suspension is available in the strength and package listed below: NDC 67877-882-71 Supplied as white to off-white to yellowish granular powder in amber colored glass bottle or amber PET bottle containing 155 mg rivaroxaban packaged with two oral dosing syringes. After reconstitution with 150 mL of purified water, 1 mL of the suspension contains 1 mg rivaroxaban. Discard reconstituted suspension after “Discard after” date written on the bottle. Storage of granules and reconstituted suspension: Store at room temperature between 20 o C to 25 o C (68 o F to 77 o F); excursions permitted between 15 o C to 30 o C (59 o F to 86 o F) [see USP Controlled Room Temperature]. Do not freeze the granules or reconstituted suspension. Keep out of the reach of children.