Retron-O Tablet

Ondansetron (4mg)+ Omeprazole (10mg)

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Retron-O Tablet is a combination of medicine used in the treatment of nausea and vomiting. It also relieves symptoms such as heartburn, indigestion, stomach pain, or irritation by reducing the production of acid in the stomach.

Written By Dr. Swati Mishra, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 19 Jun 2026 | 04:49 PM (IST)

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General Information

Contains

Ondansetron (4mg)+ Omeprazole (10mg)

Marketer

Ria Lifesciences Pvt Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Retron-O Tablet is taken without food in a dose and duration as advised by the doctor. The dose you are given will depend on your condition and how you respond to the medicine. You should keep taking this medicine for as long as your doctor recommends. If you stop treatment too early your symptoms may come back and your condition may worsen. Let your healthcare team know about all other medications you are taking as some may affect, or be affected by this medicine.

The most common side effects are diarrhea, stomach pain, constipation, flatulence, headache, and fatigue. Most of these are temporary and usually resolve with time. Contact your doctor straight away if you are at all concerned about any side effects. To overcome constipation, you should add fibre-rich foods in your diet and stay hydrated.

Before taking this medicine, you should tell your doctor if you are pregnant, planning pregnancy or breastfeeding. You should also tell your doctor if you have liver or kidney diseases so that your doctor can prescribe a suitable dose for you.

Uses of Retron-O Tablet

Nausea

Benefits of Retron-O Tablet

Nausea
Retron-O Tablet blocks the action of chemicals in the body that can make you feel or be sick. It is often used to prevent nausea and vomiting that may be caused due to some medicines or cancer treatment. This medicine helps you recover more comfortably from cancer treatments such as radiation therapy or chemotherapy. It is also effective at preventing nausea and vomiting after an operation (in adults only). The dose will depend on what you are being treated for but always take this medicine as it is prescribed.

Side effects of Retron-O Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Retron-O

Diarrhea
Stomach pain
Constipation
Flatulence
Headache
Flushing of skin
Fatigue

How to use Retron-O Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Retron-O Tablet is to be taken on an empty stomach.

How Retron-O Tablet works

Retron-O Tablet is a combination of two medicines: Ondansetron and Omeprazole.

Quick tips

Retron-O Tablet helps treat nausea and vomiting.
Take it one hour before meal, preferably in the morning.
It is fast-acting and starts working within 30 minutes.
If you vomit within one hour of taking a dose, take another dose.
Avoid heavy meals and sip water regularly while taking this medicine.
Inform your doctor if you get watery diarrhea, fever, or stomach pain that does not go away.

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with Retron-O Tablet. Please consult your doctor.

Pregnancy

CONSULT YOUR DOCTOR

The safety of Retron-O Tablet during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.

Breast feeding

CONSULT YOUR DOCTOR

Retron-O Tablet may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.

Driving

CONSULT YOUR DOCTOR

It is not known whether Retron-O Tablet alters the ability to drive. Do not drive if you experience any symptoms that affect your ability to concentrate and react. Please consult your doctor.
Retron-O Tablet may cause dizziness and visual disturbances. This may affect your driving ability.

Kidney

CAUTION

Retron-O Tablet should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.

Liver

CAUTION

Retron-O Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.
A lower dose may be advised in patients with liver disease and who have to take this medicine for a long time.

Frequently asked questions

What is Retron-O Tablet used for?

Retron-O Tablet is used to relieve nausea, vomiting, acidity, and symptoms caused by excess stomach acid. These symptoms can arise from various digestive problems and may make eating, drinking, and daily activities uncomfortable. Retron-O Tablet can help you feel more comfortable and support recovery by helping to control both nausea and acid-related discomfort.

How does Retron-O Tablet work?

Retron-O Tablet contains ondansetron and omeprazole, which work together to relieve digestive symptoms. Ondansetron helps prevent and control nausea and vomiting by blocking signals in the body that trigger these symptoms. Omeprazole reduces the amount of acid produced in the stomach, helping to relieve acidity, heartburn and acid-related discomfort. Together, they provide more complete relief from digestive symptoms and help improve overall comfort.

Why is it recommended to take Retron-O Tablet on an empty stomach?

Retron-O Tablet is generally taken on an empty stomach because the acid-lowering component works best before food. Taking the medicine before eating allows it to start working before the stomach produces large amounts of acid. This can improve symptom relief and overall effectiveness.

How long before a meal should I take Retron-O Tablet?

Retron-O Tablet is generally taken before meals or as advised by your doctor. Taking it before food allows the medicine to begin controlling stomach acid production before eating. Follow the timing instructions provided by your doctor to obtain the maximum benefit from treatment.

How quickly does Retron-O Tablet start working?

Some people may notice improvement in nausea or acidity within a few hours of taking Retron-O Tablet, while others may take longer depending on the severity of symptoms and the underlying condition. Continue taking the medicine as directed even if improvement is not immediate.

Can Retron-O Tablet help prevent nausea caused by chemotherapy or surgery?

Yes, the ondansetron component in Retron-O Tablet is used to help prevent and control nausea and vomiting associated with certain medical treatments and procedures. Your doctor will determine whether this medicine is appropriate based on the cause of your symptoms and your overall treatment plan.

What if I vomit after taking Retron-O Tablet?

If you vomit shortly after taking Retron-O Tablet, the medicine may not have been fully absorbed. The appropriate action depends on how soon vomiting occurred and your dosing schedule. Consult your doctor rather than taking an extra dose on your own.

Can I stop taking Retron-O Tablet once I feel better?

Do not stop taking Retron-O Tablet without discussing it with your doctor, even if your symptoms improve. Stopping treatment too early may allow symptoms to return. Your doctor can advise whether treatment should be continued, adjusted, or stopped based on your condition and response.

Are there any serious side effects of Retron-O Tablet that need immediate medical attention?

Seek medical help immediately if you develop signs of a serious allergic reaction, including swelling of the face, lips, tongue, or throat, difficulty breathing, or severe skin reactions. Other symptoms requiring urgent medical evaluation include severe dizziness, fainting, or persistent worsening symptoms.

Can Retron-O Tablet help with both nausea and acidity at the same time?

Yes, Retron-O Tablet is designed to address both nausea-related symptoms and problems caused by excess stomach acid. This combination approach may be helpful for individuals who experience these symptoms together, allowing more comprehensive symptom relief with a single treatment.

What foods should I avoid while taking Retron-O Tablet?

If you notice that your symptoms worsen with certain foods, avoid items known to trigger acidity, such as very spicy, oily, or acidic foods and beverages. Eating smaller meals and following your doctor's dietary advice may also help improve symptom control.

Fact Box

Habit Forming

Therapeutic Class

GASTRO INTESTINAL

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Ria Lifesciences Pvt Ltd
Address: Janakpuri, New Delhi-110046

Vendor Details

Country of origin: India

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Retron-O Tablet

Retron-O Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Retron-O Tablet

Benefits of Retron-O Tablet

Side effects of Retron-O Tablet

How to use Retron-O Tablet

How Retron-O Tablet works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Frequently asked questions

What is Retron-O Tablet used for?

How does Retron-O Tablet work?

Why is it recommended to take Retron-O Tablet on an empty stomach?

How long before a meal should I take Retron-O Tablet?

How quickly does Retron-O Tablet start working?

Can Retron-O Tablet help prevent nausea caused by chemotherapy or surgery?

What if I vomit after taking Retron-O Tablet?

Can I stop taking Retron-O Tablet once I feel better?

Are there any serious side effects of Retron-O Tablet that need immediate medical attention?

Can Retron-O Tablet help with both nausea and acidity at the same time?

What foods should I avoid while taking Retron-O Tablet?

Fact Box

Habit Forming

Therapeutic Class

References

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Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

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