Europe — EMA
Ondansetron Bluefish (Ondansetron Hydrochloride Dihydrate)
GNH USA supplies Ondansetron Bluefish (Ondansetron), a 5‑HT3 receptor antagonist for prevention of chemotherapy, radiotherapy and postoperative nausea
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What is Ondansetron Hydrochloride Dihydrate?
Ondansetron Hydrochloride Dihydrate, the active ingredient in Ondansetron Bluefish, is a 5-HT3 receptor antagonist presented as a tablet for oral use. It treats nausea and vomiting associated with chemotherapy, radiotherapy, and postoperative settings. GNH USA supplies Ondansetron Bluefish as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide.
What is Ondansetron Hydrochloride Dihydrate used for?
Ondansetron is a 5‑HT3 receptor antagonist used to prevent nausea and vomiting in several clinical settings. - Chemotherapy-induced nausea and vomiting: prevents or reduces nausea and vomiting associated with cancer chemotherapy. - Radiotherapy-induced nausea and vomiting: helps control nausea and vomiting caused by radiation treatment. - Postoperative nausea and vomiting: reduces incidence of nausea and vomiting after surgical procedures.
What are the side effects of Ondansetron Hydrochloride Dihydrate?
Ondansetron may cause adverse reactions, ranging from mild to serious, although many patients tolerate it well.
Common Side Effects: - Headache: mild to moderate headache reported. - Constipation: reduced bowel movements. - Diarrhoea: loose stools. - Fatigue: feeling of tiredness. - Dizziness: light‑headed sensation.
Serious or Rare Side Effects: - Cardiac arrhythmia: QT interval prolongation. - Severe allergic reaction: rash, swelling, anaphylaxis. - Serotonin syndrome: rare when combined with serotonergic agents.
What precautions apply to Ondansetron Hydrochloride Dihydrate?
When prescribing Ondansetron, clinicians should consider several safety measures. - Cardiac monitoring: assess baseline ECG in patients with known cardiac disease. - Electrolyte balance: correct hypokalemia, hypomagnesemia before use. - Drug interactions: review concomitant serotonergic drugs. - Pregnancy: use only if benefit outweighs risk; data limited. - Lactation: caution; unknown excretion in breast milk. - Store at ambient temperature: keep below 25 °C, retain in original packaging, protect from moisture.
What does Ondansetron Hydrochloride Dihydrate interact with?
Ondansetron interacts with several drug classes; awareness helps avoid adverse events.
Major Interactions (Avoid): - Apomorphine: may cause profound hypotension and loss of consciousness. - Other QT‑prolonging agents: increase risk of cardiac arrhythmia.
Moderate Interactions (Monitor Closely): - Antidepressants (SSRIs, SNRIs, MAOIs): potential for serotonin syndrome. - Antifungal azoles (ketoconazole, itraconazole): may increase plasma levels. - Anticonvulsants (carbamazepine, phenytoin): may reduce effectiveness. - Opioids (methadone, fentanyl): additive QT prolongation risk.



