Europe — EMA
Ondansetron Aristo (Ondansetron Hydrochloride Dihydrate)
GNH USA supplies Ondansetron Aristo (Ondansetron), a 5-HT3 receptor antagonist for chemotherapy, radiotherapy and postoperative nausea.
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What is Ondansetron Hydrochloride Dihydrate?
Ondansetron Hydrochloride Dihydrate, the active ingredient in Ondansetron Aristo, is a 5-HT3 receptor antagonist presented as an injection for intravenous use. It is used to prevent nausea and vomiting associated with chemotherapy, radiotherapy and postoperative recovery in adult and pediatric patients.
GNH USA supplies Ondansetron Aristo as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics 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 pathways. - Chemotherapy‑induced nausea and vomiting: helps control the acute and delayed phases, improving patient comfort during cancer treatment. - Radiotherapy‑induced nausea and vomiting: reduces the frequency and severity of nausea associated with radiation sessions. - Post‑operative nausea and vomiting: decreases the incidence of nausea and vomiting after surgical procedures, supporting faster recovery.
What are the side effects of Ondansetron Hydrochloride Dihydrate?
Side effects reported with ondansetron injection are generally mild to moderate and vary with individual sensitivity.
Common Side Effects: - Headache: mild to moderate intensity. - Constipation: reduced bowel motility. - Diarrhoea: occasional loose stools. - Fatigue: feeling of tiredness. - Dizziness: transient light‑headedness. - Injection site reactions: erythema or mild pain.
Serious or Rare Side Effects: - Cardiac arrhythmia: QT‑interval prolongation, especially with rapid IV administration. - Severe hypersensitivity: anaphylaxis, angio‑edema, or skin rash. - Serotonin syndrome: rare when combined with other serotonergic agents. - Hepatic dysfunction: elevated liver enzymes. - Neuro‑muscular weakness: rare cases of muscle rigidity. - Pulmonary edema: very rare, usually in high‑risk patients.
What precautions apply to Ondansetron Hydrochloride Dihydrate?
When using Ondansetron Aristo, clinicians should consider several safety measures to minimise risk. - Cardiac monitoring: patients with known QT prolongation or electrolyte disturbances should be monitored. - Concomitant serotonergic drugs: assess risk of serotonin syndrome. - Renal or hepatic impairment: dose adjustment may be required. - Pregnancy and lactation: use only if clearly needed; benefits must outweigh the potential risk. - Pediatric use: weight‑based dosing is essential; follow prescriber guidance. - Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.
What does Ondansetron Hydrochloride Dihydrate interact with?
Ondansetron may interact with several medicines, altering its efficacy or safety profile.
Major Interactions (Avoid): - Apomorphine: may cause profound hypotension and loss of consciousness. - Certain anti‑arrhythmic agents (e.g., quinidine, amiodarone): increase risk of QT prolongation. - Serotonergic antidepressants (SSRIs, SNRIs, MAOIs): heightened risk of serotonin syndrome.
Moderate Interactions (Monitor Closely): - CYP3A4 inhibitors (ketoconazole, erythromycin): may raise ondansetron plasma levels. - CYP2D6 substrates (tramadol, codeine): potential for altered metabolism. - Diuretics causing electrolyte loss: may exacerbate QT‑interval effects.



