Prescription requiredAntiemetic

Ondem Syrup — Uses, Dosage & Benefits

Ondem Syrup is used for Prevention and treatment of nausea and vomiting due to chemotherapy, radiotherapy, and post-operative states; doctor may also prescribe for severe vomiting due to other causes..

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated August 2026

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Active Ingredient / Composition

Ondansetron (2mg/5ml)

What is Ondem Syrup used for?

Prevention and treatment of nausea and vomiting due to chemotherapy
radiotherapy
and post-operative states; doctor may also prescribe for severe vomiting due to other causes.

How Ondem Syrup Works

Ondansetron is a selective 5-HT3 (serotonin) receptor antagonist. It blocks serotonin receptors in the gut and the vomiting center in the brain, reducing the nausea and vomiting reflex.

Dosage & Directions

Oral syrup. Shake well before use and measure with a calibrated spoon/cup. Take exactly as prescribed; can be taken with or without food. Dose depends on age/weight and the cause of vomiting; do not exceed the prescribed frequency.

Always follow your doctor's prescription. Do not self-medicate.

Key Benefits

Controls nausea and vomiting
Helpful in chemotherapy-induced vomiting
Useful for post-operative nausea
Improves oral intake and hydration by reducing vomiting

Pregnancy

Consult doctor

Alcohol Interaction

Use with caution

Ondem Syrup — Quick Facts

Composition: Ondansetron (2mg/5ml)
Therapeutic class: Antiemetic
Drug class: 5-HT3 receptor antagonist (serotonin antagonist)
Prescription: Required (Rx)
Price: ₹13
Habit forming: No
Storage: Store below 25°C, protected from light and moisture. Keep bottle tightly closed. Do not freeze. Keep out of reach of children.

Ondem Syrup — Usage FAQs

How should I take this medicine?

Follow the dosage prescribed by your doctor. Do not alter the dose without medical advice.

Can I take this medicine without a prescription?

Prescription-required medicines need a valid Rx. OTC medicines can be purchased directly.

What if I miss a dose?

Take the missed dose as soon as you remember, unless it is close to your next scheduled dose. Do not double the dose.

How long does it take to show effect?

The time to show effect varies by medicine and condition. Consult your doctor for specific timelines.

Ondem Syrup — Uses, Dosage & Benefits

Active Ingredient / Composition

What is Ondem Syrup used for?

How Ondem Syrup Works

Dosage & Directions

Key Benefits

Pregnancy

Alcohol Interaction

Ondem Syrup — Quick Facts

Ondem Syrup — Usage FAQs

More from PingMeDoc™

Safety disclaimer

Ondem Syrup — Uses, Dosage & Benefits

Active Ingredient / Composition

What is Ondem Syrup used for?

How Ondem Syrup Works

Dosage & Directions

Key Benefits

Pregnancy

Alcohol Interaction

Ondem Syrup — Quick Facts

Ondem Syrup — Usage FAQs

More from PingMeDoc™

Safety disclaimer