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Ondem-MD 4 Tablet contains ondansetron and is used to control nausea and vomiting caused by conditions such as a stomach upset. It is also used to prevent nausea and vomiting caused by surgery, cancer chemotherapy or radiotherapy. It works by blocking serotonin, a chemical messenger in the brain that can trigger nausea and vomiting.
It may be used alone or with other medicines, and can be taken with or without food. It is a mouth-dissolving tablet: do not handle it with wet hands, and place it in your mouth to dissolve rather than swallowing it whole. The first dose is usually taken before surgery, chemotherapy or radiotherapy, followed by further doses as prescribed, normally for a few days at most. Take it at the same time(s) each day and be careful not to take too much.
It does not relieve other side effects of cancer treatment and has little effect on vomiting caused by motion sickness. Headache, diarrhoea or constipation, and tiredness are the most common side effects; they should go away once you stop the medicine. Tell your doctor if they bother you or persist.
Before taking it, tell your doctor if you have heart or liver problems or a blockage in your stomach or intestines. Also mention any other medicines you take, especially those for epilepsy, heart problems, cancer or depression. Ask your doctor for advice if you are pregnant or breastfeeding.
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