Rivaroxaban Tablet 20mg

Q1: What is Rivaroxaban 20mg (Xarelto) used for?

Rivaroxaban is a direct oral anticoagulant (DOAC) used for treatment and prevention of deep vein thrombosis (DVT), pulmonary embolism (PE), stroke prevention in atrial fibrillation, and VTE prophylaxis after joint replacement surgery. In HIV patients, it manages thrombotic complications associated with chronic HIV inflammation.

Q2: How does Rivaroxaban work to prevent blood clots?

Rivaroxaban directly inhibits Factor Xa in the coagulation cascade. By blocking Factor Xa, it prevents the conversion of prothrombin to thrombin, thereby inhibiting both clot formation and existing thrombus growth. It requires no antidote for most situations (Andexanet alfa reverses it if needed).

Q3: Why is anticoagulation particularly important in HIV patients?

HIV/AIDS patients have significantly elevated thrombotic risk due to chronic systemic inflammation, endothelial dysfunction, platelet activation, and hypercoagulability. HIV-associated medications can also affect clotting. Rivaroxaban provides predictable anticoagulation without INR monitoring requirements.

Q4: How is Rivaroxaban 20mg taken?

For VTE treatment: 20mg once daily with the evening meal. Food enhances absorption by ~29%. For DVT/PE treatment, initial intensive phase (15mg twice daily for 3 weeks) precedes 20mg once daily maintenance. For AF stroke prevention: 20mg once daily with evening meal.

Q5: What are the most common side effects?

Bleeding is the main concern — bruising more easily, longer bleeding after cuts, heavy menstrual periods, blood in stool/urine, nosebleeds. GI upset (nausea, abdominal pain) and back pain occur in some patients.

Q6: What serious bleeding risks require emergency care?

Seek immediate care for: intracranial hemorrhage (sudden severe headache, vision changes, weakness), severe GI bleeding (black/bloody stools, vomiting blood), spinal hematoma after epidural procedures (back pain + leg numbness), or unexplained excessive bleeding.

Q7: How does Rivaroxaban interact with HIV medications?

CYP3A4 and P-gp inhibitors in HIV regimens (ritonavir, cobicistat-boosted PIs) significantly increase Rivaroxaban levels — dose reduction or avoidance may be needed. Strong inducers (rifampicin, efavirenz) reduce Rivaroxaban levels. Full pharmacist review is essential.

Q8: Can I take Rivaroxaban with other anticoagulants or blood thinners?

No. Do not combine Rivaroxaban with other anticoagulants, aspirin (except 100mg for AF-specific indications), or NSAIDs — this significantly increases bleeding risk. Always disclose all medications to your prescribing doctor.

Q9: What kidney function is required for Rivaroxaban 20mg?

Rivaroxaban 20mg requires adequate renal function. Not recommended if eGFR <15 ml/min (for VTE treatment). For patients with eGFR 15–49, the dose may be reduced to 15mg. Regular renal function monitoring is required.

Q10: Is Rivaroxaban safe during pregnancy?

No. Rivaroxaban is contraindicated during pregnancy and breastfeeding. It crosses the placenta and may cause fetal hemorrhage. Low molecular weight heparin (LMWH) is the anticoagulant of choice during pregnancy.

Q11: How should Rivaroxaban 20mg be stored?

Store at room temperature below 30°C, away from moisture and light. Keep in original packaging out of reach of children.

Q12: Do I need a prescription for Rivaroxaban?

Yes. Rivaroxaban requires a physician prescription with assessment of renal function, bleeding risk, indication, and careful drug interaction review — particularly critical in HIV patients on multiple antiretrovirals.