What is granisetron?

Granisetron is a prescription medication that's used to prevent nausea and vomiting caused by certain cancer treatments, including chemotherapy, radiation therapy and surgery. Granisetron is a type of medication called a 5-HT3 blocker, and it works by blocking serotonin which is a chemical in the body that can cause vomiting. Granisetron is available as an injection or a tablet. When taken by an injection, granisetron is given by a health care professional in a hospital or clinic and it may be administered as a 30-second injection or mixed into IV fluid and infused over five minutes. It is usually administered about 30 minutes before chemotherapy, or at any point before, during or after surgery. The tablet form may be taken within an hour before chemotherapy or radiation therapy. Your doctor will determine your dose based on your medical condition and weight. Granisetron is the generic name for the active ingredients found in brand-name medications, such as Kytril and Granisol. Talk to your doctor to determine whether granisetron is right for you.

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