Ondansetron Tablets Viatris (Ondansetron)
Complete patient guide for uses, dosage, side effects, and safety information
Prescription RequiredQuick Facts
What Is Ondansetron Tablets Viatris Used For?
Ondansetron Tablets Viatris contain ondansetron, which belongs to a group of medicines called serotonin receptor-3 antagonists. These tablets are specifically designed to help prevent nausea and vomiting that can occur after medical treatments.
Primary Uses
These tablets are used to help stop the nausea (sick feeling) and vomiting which can occur after medical treatments. They should only be used to treat the nausea and vomiting for which they have been prescribed by your doctor.
How It Works
Ondansetron works as a serotonin receptor-3 antagonist, blocking certain signals in your body that trigger nausea and vomiting.
Good to know: Ondansetron Tablets Viatris are not addictive.
How to Take Ondansetron Tablets Viatris
Take your tablets exactly as directed by your doctor or pharmacist. Swallow each tablet whole with a drink of water – do not crush the tablet.
Dosage Instructions
Take only the amount your doctor or pharmacist tells you. Do not take more tablets than prescribed, and do not take them more often than directed. If you vomit within one hour of taking your first tablet of each prescribed course, take the same dose again. If you continue to vomit, contact your doctor.
What If You Miss a Dose?
If you miss your dose and don’t feel sick, take your next dose when scheduled. If you miss your dose and feel sick, take the missed dose as soon as possible, then return to your normal schedule. If it’s almost time for your next dose, skip the missed dose and take your next dose when scheduled.
Important: Do not stop taking or change the dose without first checking with your doctor.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- headache
- sensation of warmth or flushing
- mild stomach cramps
- constipation or diarrhea
- dry mouth
- hiccups
Seek immediate medical attention if you experience:
- wheezy symptoms
- chest pain or tightness
- changes in heart rhythm (faster, slower, irregular, or throbbing)
- disturbance in heart rhythm (sometimes causing sudden loss of consciousness)
- serotonin syndrome (confusion, sweating, unsteadiness, shaking, diarrhea)
- severe skin reaction where top layer detaches from lower layers
- low blood pressure
- fits or convulsions
- swelling of eyelids, face, lips, mouth or throat causing difficulty swallowing or breathing
- skin rash, skin lumps or hives
Important Warnings
There are important situations when you should not take Ondansetron Tablets Viatris, and conditions you must discuss with your doctor before starting treatment.
Who Should Not Take Ondansetron Tablets Viatris
Do not take if you are taking apomorphine (used to treat Parkinson’s disease), have ever had an allergic reaction to ondansetron or any ingredients, are pregnant/trying to become pregnant/breastfeeding unless your doctor says it’s safe, the expiry date has passed, or the packaging is torn or tampered with.
Medical Conditions to Discuss
Tell your doctor if you are allergic to foods, dyes, preservatives or other medicines, have had to stop taking another nausea/vomiting medicine, are taking any other medicines (including over-the-counter), have or used to have liver problems, or are breastfeeding, pregnant or trying to become pregnant.
Pregnancy and Breastfeeding
Do not take if you are pregnant, trying to become pregnant, or breastfeeding unless your doctor says it is safe.
Drug Interactions
Some medicines may affect how Ondansetron Tablets Viatris work, and your doctor or pharmacist can advise you about taking it with other medications.
Serotonin Syndrome Risk: Taking with other serotonergic drugs may cause serotonin syndrome (confusion, sweating, unsteadiness, shaking, diarrhea). This is not an exhaustive list – discuss with your pharmacist or doctor if you have concerns.
- apomorphine (used to treat Parkinson’s disease) – do not take together
- serotonergic drugs including certain antidepressants
- opioid pain medicines such as tramadol and fentanyl
- lithium
Alcohol & Driving
The source material does not provide specific information about alcohol consumption or driving while taking Ondansetron Tablets Viatris.
Storage
Keep this medicine where children cannot reach it, such as in a locked cupboard. Store in a cool, dry place below 25°C, away from bright sunlight. Do not leave in a car, on a window sill, or in the bathroom. Keep tablets in their blister pack until it’s time to take them. Return any unused or expired medicine to your pharmacist.
Overdose Information
If you think you or anyone else may have taken too much Ondansetron Tablets Viatris, immediately telephone your doctor or Poisons Information Centre (13 11 26) for advice, even if there are no signs of discomfort or poisoning. If you’re not sure what to do, contact your doctor or pharmacist.
Frequently Asked Questions
No, Ondansetron Tablets Viatris are not addictive.
If you vomit within one hour of taking your first tablet of each prescribed course, you should take the same dose again. If you continue to vomit, tell your doctor.
No, do not crush the tablets. If you have trouble swallowing your tablet, please tell your doctor.
If you miss your dose and don’t feel sick, take your next dose when scheduled. If you miss your dose and feel sick, take the missed dose as soon as possible, then return to your normal schedule. If it’s almost time for your next dose, skip the missed dose.
Some medicines may affect how Ondansetron works. Tell your doctor about all medicines you’re taking, including over-the-counter medicines. Do not take with apomorphine (used for Parkinson’s disease).
The most commonly reported side effects are headache, sensation of warmth or flushing, mild stomach cramps, constipation or diarrhea, dry mouth, and hiccups. These are all mild side effects.
Contact your doctor immediately if you experience wheezy symptoms, chest pain, changes in heart rhythm, severe skin reactions, swelling of face/lips/throat, fits or convulsions, or signs of serotonin syndrome (confusion, sweating, unsteadiness, shaking, diarrhea).
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.