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Aloxi (palonosetron) is a second-generation 5-HT3 receptor antagonist. It blocks serotonin receptors in the gastrointestinal tract and central nervous system that are activated during chemotherapy, preventing the nausea and vomiting reflex. Its longer half-life compared to older agents in the same class gives it coverage for both acute CINV (within 24 hours) and delayed CINV (24 to 120 hours after chemotherapy).

Aloxi is typically given as a single intravenous (IV) injection of 0.25 mg approximately 30 minutes before chemotherapy begins. Because it is an IV medication, it is administered in a clinical setting such as an infusion center. Your oncology team will coordinate the timing with your chemotherapy schedule.

Yes. One of Aloxi's key advantages over older 5-HT3 antagonists is its effectiveness against delayed CINV, which can occur 24 to 120 hours after a chemotherapy session. Its extended half-life of roughly 40 hours allows a single dose to provide prolonged antiemetic coverage.

The most commonly reported side effects include headache, constipation, and dizziness. Less common effects include fatigue, diarrhea, and mild changes in heart rhythm (QT prolongation). Your physician will review your full health history and current medications to assess your individual risk before prescribing Aloxi.

Yes, and it often is. For highly emetogenic chemotherapy regimens, Aloxi is frequently combined with a corticosteroid such as dexamethasone and an NK1 receptor antagonist such as aprepitant (Emend) to maximize protection against both acute and delayed nausea and vomiting. Your care team will design the right combination for your specific chemotherapy protocol.

Aloxi, like other 5-HT3 receptor antagonists, has the potential to cause mild QT interval prolongation, which can affect heart rhythm. Patients with a history of arrhythmias, congenital long QT syndrome, or those taking other QT-prolonging medications should inform their physician before use. Your doctor will review your cardiac history and medication list to determine if Aloxi is appropriate for you.

Doctronic uses an AI-powered evaluation to gather detailed information about your symptoms, health history, and current medications. A licensed physician then reviews your information, makes a clinical determination, and if appropriate, creates a personalized treatment plan that may include a prescription. The entire process is designed to be fast, thorough, and convenient.

Yes. Doctronic works exclusively with licensed, board-certified physicians whose prescribing practices are regularly reviewed and audited for quality and safety. All patient information is protected under HIPAA-compliant data practices, and our platform is available to adults 18 and older in any U.S. state.