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Granisetron chemical structure
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| ATC code |
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|Molecular weight||312.41 g/mol|
|Elimination half-life||3–14 hours|
|Excretion||Renal 11–12%, faecal 38%|
|Pregnancy category||B1 (Au),|
|Legal status||S4 (Au), POM (UK), ℞-only (U.S.)|
|Routes of administration||Oral, intravenous, transdermal|
Granisetron is a serotonin 5-HT3 receptor antagonist used as an antiemetic to treat nausea and vomiting following chemotherapy. Its main effect is to reduce the activity of the vagus nerve, which is a nerve that activates the vomiting center in the medulla oblongata. It does not have much effect on vomiting due to motion sickness. This drug does not have any effect on dopamine receptors or muscarinic receptors.
Granisetron was developed by chemists working at the British drug company Beecham around 1988 and is available as a generic. It is produced by Roche Laboratories under the trade name Kytril. The drug was approved in the United Kingdom in 1991 and in United States in 1994 by the FDA.
A granisetron transdermal patch with the trade name Sancuso was approved by the US FDA on September 12, 2008. Sancuso is manufactured by ProStrakan, Inc., a pharmaceutical company headquartered in Bedminster, NJ, with global headquarters in Scotland.
Granisetron breaks down slowly, staying in the body for a long time. One dose usually lasts 4 to 9 hours and is usually administered once or twice daily. This drug is removed from the body by the liver and kidneys.
- Chemotherapy-induced nausea and vomiting
- 5-HT3 receptor antagonists are the primary drugs used to treat and prevent chemotherapy-induced nausea and vomiting. Many times they are given intravenously about 30 minutes before beginning therapy.
- Post-operative and post-radiation nausea and vomiting
- Is a possible therapy for nausea and vomiting due to acute or chronic medical illness or acute gastroenteritis
- Treatment of Cyclic vomiting syndrome although there are no formal trials to confirm efficacy.
Granisetron is a well-tolerated drug with few side effects. Headache, dizziness, and constipation are the most commonly reported side effects associated with its use. There have been no significant drug interactions reported with this drug's use. It is broken down by the liver's cytochrome P450 system and it has little effect on the metabolism of other drugs broken down by this system.
- ↑ PRNewswire. FDA Approves Sancuso, the First and Only Patch for Preventing Nausea and Vomiting in Cancer Patients Undergoing Chemotherapy. September 12, 2008.
- Katzung, Bertram G. Basic and Clinical Pharmacology, 9th ed. (2004). ISBN 0-07-141092-9
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