Europe — EMA
Ondansetron Aristo (Ondansetron Hydrochloride Dihydrate)
GNH USA supplies Ondansetron Aristo (Ondansetron), a 5‑HT3 receptor antagonist for chemotherapy, radiation and post‑operative nausea.
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What is Ondansetron Hydrochloride Dihydrate?
Ondondansetron Hydrochloride Dihydrate, the active ingredient in Ondansetron Aristo, is a 5-HT3 receptor antagonist presented as a tablet for oral use. It helps prevent nausea and vomiting associated with chemotherapy, radiation therapy, and postoperative recovery in adult patients. GNH USA supplies Ondansetron Aristo as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres and pharmacies worldwide.
GNH USA supplies Ondansetron Aristo as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres and pharmacies worldwide.
What is Ondansetron Hydrochloride Dihydrate used for?
Ondansetron Aristo is a selective 5‑HT3 receptor antagonist used in the management of nausea and vomiting across several clinical pathways.
- Chemotherapy‑induced nausea and vomiting: reduces the frequency and severity of acute and delayed episodes. - Radiation‑induced nausea and vomiting: helps control nausea during and after radiotherapy. - Post‑operative nausea and vomiting: decreases the incidence of vomiting after surgical procedures. - Hyperemesis gravidarum (severe pregnancy‑related nausea): provides symptomatic relief when other treatments are insufficient.
What are the side effects of Ondansetron Hydrochloride Dihydrate?
Adverse reactions to ondansetron are generally mild to moderate, but clinicians monitor both common and rare events.
Common Side Effects: - Headache: mild to moderate intensity. - Constipation: reduced bowel movements. - Diarrhoea: loose stools. - Fatigue: feeling of tiredness. - Dizziness: light‑headed sensation. - Injection site pain (if administered parenterally).
Serious or Rare Side Effects: - Cardiac arrhythmia: QT‑interval prolongation, especially with high doses. - Severe hypersensitivity: rash, itching, swelling, or anaphylaxis. - Serotonin syndrome: rare when combined with other serotonergic agents. - Hepatic dysfunction: elevated liver enzymes. - Vision changes: blurred vision or visual disturbances.
What precautions apply to Ondansetron Hydrochloride Dihydrate?
When prescribing ondansetron, clinicians consider several safety aspects to minimise risk.
- Cardiac monitoring: assess baseline ECG in patients with known cardiac disease. - Electrolyte balance: correct hypokalaemia or hypomagnesemia before use. - Drug interactions: review concomitant medications that may affect QT interval. - Pregnancy: use only if benefit outweighs potential risk. - Lactation: evaluate infant exposure through breast milk. - Store at below 25°C: keep in the original container, protect from moisture and direct sunlight.
What does Ondansetron Hydrochloride Dihydrate interact with?
Ondansetron may interact with other medicines that influence cardiac rhythm or serotonin pathways.
Major Interactions (Avoid): - Amiodarone: additive QT‑prolongation risk. - Cisapride: combined effect on cardiac repolarisation. - Certain anti‑malarial drugs (e.g., quinidine): heightened arrhythmia potential.
Moderate Interactions (Monitor Closely): - Antidepressants (SSRIs, SNRIs): possible serotonin syndrome. - Antifungal azoles (ketoconazole, fluconazole): may increase ondansetron plasma levels. - Macrolide antibiotics (erythromycin): modest QT‑interval effect. - Calcium‑channel blockers (diltiazem): may affect drug metabolism.



