昂丹司琼片饭前还是饭后服用？

Ondansetron (trade name: Zofran) is a 5-hydroxytryptamine 3 receptor (5-HT3) blocker. Cancer chemotherapy drugs can cause the vomiting center in the intestine and medulla oblongata to release 5-HT3, activate 5-HT3 receptors, and cause nausea and vomiting. Ondansetron tablets exert antiemetic effects by blocking peripheral and central nervous system $5-HT3 receptors and are used to treat nausea and vomiting in patients undergoing chemotherapy and radiotherapy. Some patients may ask, should I take the tablets before or after meals?

After receiving ondansetron tablets, patients must read the instructions carefully to understand the characteristics and contraindications of the drug. Then take the medicine in accordance with the doctor's instructions and do not take the medicine blindly. Ondansetron hydrochloride tablets (capsules): (1) 4mg; (2) 8mg and ondansetron hydrochloride injection: (1) 2ml: 4mg; (2) 4ml: 8mg. Oral administration: Take 8 mg 1 to 2 hours before radiotherapy; administer via intravenous or intramuscular injection, and the dosage can be flexibly controlled. Next, let’s learn about the recommended dosage of ondansetron.

According to the medication instructions, it is not clear whether Ondansetron tablets should be taken before or after meals. Instead, the medication time should be determined according to the specific treatment time: (1) For vomiting caused by highly emetic chemotherapy drugs, 2 tablets should be taken orally every 8 to 12 hours after stopping chemotherapy for 5 consecutive days; (2) For vomiting caused by chemotherapy drugs that are not very emetic. For vomiting, after injecting ondansetron injection before chemotherapy, take 2 tablets orally every 8 to 12 hours for 5 consecutive days; (3) For vomiting caused by radiotherapy, take 2 tablets orally 1 to 2 hours before radiotherapy for the first time, and 2 tablets every 8 hours thereafter; (4) To prevent nausea and vomiting after surgery, 2 tablets should be taken orally 1 hour before anesthesia, and then 2 tablets every 8 hours, taken 2 times.

Note: The above information comes from the Internet and is compiled and edited by Medical Companion Travel (please correct me if there are any errors or omissions). It is only to provide information on the latest drugs on the market in the world and help Chinese patients understand the latest international new drug trends. It is only for internal discussion among medical staff and does not serve as any basis for medication. For specific medication guidelines, please consult the attending physician.

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