Granisetron hydrochloride
Granisetron hydrochloride is a medication used to prevent nausea and vomiting caused by cancer chemotherapy, radiation therapy, and surgery. It is classified as a 5-HT3 receptor antagonist, which works by blocking the action of serotonin, a natural substance that may cause nausea and vomiting.
Medical Uses[edit | edit source]
Granisetron hydrochloride is primarily used in the management of nausea and vomiting induced by chemotherapy and radiotherapy. It is also used to prevent postoperative nausea and vomiting. The medication is available in various forms, including oral tablets, transdermal patches, and intravenous injections.
Mechanism of Action[edit | edit source]
Granisetron hydrochloride works by selectively blocking the 5-HT3 receptors, which are found in the vagal nerve terminals and the chemoreceptor trigger zone in the brain. By inhibiting these receptors, granisetron prevents the activation of the vomiting reflex.
Side Effects[edit | edit source]
Common side effects of granisetron hydrochloride include:
Serious side effects are rare but may include:
Dosage and Administration[edit | edit source]
The dosage of granisetron hydrochloride varies depending on the form and the condition being treated. For chemotherapy-induced nausea and vomiting, the typical dose is 1-2 mg orally or 10 mcg/kg intravenously, administered before the start of chemotherapy. For radiation-induced nausea and vomiting, the dose is usually 2 mg orally once daily.
Precautions[edit | edit source]
Patients with a history of heart disease, electrolyte imbalances, or allergic reactions to similar medications should use granisetron hydrochloride with caution. It is also important to inform the healthcare provider of all other medications being taken to avoid potential drug interactions.
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Contributors: Prab R. Tumpati, MD