Onseron 8 mg Tablets – Ondansetron Antiemetic for Nausea and Vomiting Relief

Onseron 8 mg Tablets contain Ondansetron, a selective serotonin (5-HT3) receptor antagonist used to prevent and control nausea and vomiting induced by cytotoxic chemotherapy, radiotherapy, and surgical procedures. Ondansetron blocks 5-HT3 receptors in the gut and the central nervous system, stopping the chemical signals that trigger the vomiting reflex when serotonin is released during treatment.

Onseron is a first-line antiemetic for cancer patients undergoing highly emetogenic chemotherapy or radiation therapy. It also provides effective relief for post-operative nausea and vomiting (PONV). The oral tablet formulation ensures convenient dosing before and after treatment sessions. Prescription required. Use only under medical supervision.

Key Benefits

• Prevents Chemotherapy Nausea: First-line control for highly and moderately emetogenic regimens.
• Radiotherapy Support: Reduces nausea associated with total body or abdominal radiation.
• Post-Operative Relief: Controls PONV effectively after surgical procedures.
• Fast-Acting Oral Form: Quickly absorbed for reliable pre- and post-treatment protection.

How to Use

• Take 8 mg 30 minutes before chemotherapy or radiotherapy, then 8 mg every 8 hours for up to 5 days, or as prescribed.
• Swallow the tablet whole with a glass of water; may be taken with or without food.
• For post-operative nausea, take 16 mg 1 hour before anaesthesia induction or as directed by your doctor.
• Do not exceed prescribed dosage. Follow your oncologist or physician instructions exactly.

Safety Information

• Prescription required. Do not self-medicate.
• Oral tablets carry a lower QT prolongation risk than IV form, but caution is advised in patients with congenital long QT syndrome or on other QT-prolonging drugs.
• Common side effects: headache, constipation, and transient elevated liver enzymes.
• Inform your doctor of any heart rhythm problems before starting treatment.
• Use with caution in patients with liver impairment — dose adjustment may be required.
• Not recommended for routine use in children under 4 years without specialist advice.

Browse all antiemetics and chemotherapy support medicines in our Nausea & Vomiting collection. For full oncology support products available across Pakistan, visit our General Medicines range with delivery to Lahore, Karachi, and Islamabad.