How long does ondansetron take to work

For details see our conditions. Ondansetron is an anti-sickness medicine. It will start to work within hours. The most common side-effects are a headache, constipation, and feeling flushed. In this article About ondansetron Before taking ondansetron How to take ondansetron Getting the most from your treatment Can ondansetron cause problems? How to store ondansetron Important information about all medicines. Ondansetron for nausea and vomiting sickness In this article About ondansetron Before taking ondansetron How to take ondansetron Getting the most from your treatment Can ondansetron cause problems?

Very common ondansetron side-effects these affect more than 1 in 10 people What can I do if I experience this? Constipation Try to eat a well-balanced diet, and drink several glasses of water each day. Let your doctor know if this continues Feeling warm or flushed Wear light, cool clothes. If you have any questions about this medicine ask your pharmacist. Are you protected against flu? Further reading and references.

Ondansetron is used to treat and prevent nausea and vomiting, such as following a surgical operation, or due to cancer medication or radiation therapy. It blocks the actions of chemicals in your body that can trigger nausea and vomiting. In New Zealand, ondansetron is available as tablets 4 mg and 8 mg and can be given as an injection in the hospital.

You can take ondansetron with or without food. Ondansetron should start to work within 30 minutes to an hour. Ondansetron tablets are available in two different forms — tablets or oral disintegrating tablets also called ODT. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional.

You should always consult your doctor or other healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.

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Brand name: Zofran ODT. Ondansetron comes in three forms that you take by mouth: a tablet, a disintegrating tablet, and a solution. This form is only given by a healthcare professional. Important warnings. What is ondansetron? Ondansetron comes as a tablet, a rapidly disintegrating dissolving tablet, film, and an oral solution liquid to take by mouth. The first dose of ondansetron is usually taken 30 minutes before the start of chemotherapy, 1 to 2 hours before the start of radiation therapy, or 1 hour before surgery.

Additional doses are sometimes taken one to three times a day during chemotherapy or radiation therapy and for 1 to 2 days after the end of treatment. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take ondansetron exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. If you are taking the rapidly disintegrating tablet, remove the tablet from the package just before you take your dose.

To open the package, do not try to push the tablet through the foil backing of the blister. Instead, use dry hands to peel back the foil backing. Gently remove the tablet and immediately place the tablet on the top of your tongue.

The tablet will dissolve in a few seconds and can be swallowed with saliva. This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information. Take the missed dose as soon as you remember it.

However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule.