Product image of Kytril (Granisetron) supplied by GNH India

Kytril

Active Ingredient:
Granisetron
Origin:
EU

Kytril (Granisetron)

Granisetron, the active ingredient in Kytril, is a 5-HT3 receptor antagonist presented as a injection solution for intravenous use. It treats and prevents chemotherapy‑induced nausea and vomiting as well as postoperative nausea and vomiting in adult patients. It is employed in both adult and pediatric oncology settings where appropriate.

GNH India supplies Kytril as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide, with distribution networks across Europe, Asia and other regions, and complies with EU regulatory standards for quality and safety.

Manufacturer / TM Owner

Atnahs Pharma Netherlands B.V.

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Indications & Clinical Uses

  • Granisetron is a 5‑HT3 receptor antagonist used to control nausea and vomiting associated with chemotherapy and surgery.
  • Chemotherapy‑induced nausea and vomiting: Prevents and treats acute and delayed episodes in patients receiving emetogenic chemotherapy.
  • Postoperative nausea and vomiting: Reduces incidence of nausea and vomiting after surgical procedures.
  • Radiation therapy‑induced nausea and vomiting: Provides prophylaxis for patients undergoing radiotherapy.

How It Works

  • Granisetron selectively blocks peripheral and central 5‑HT3 receptors, preventing serotonin from binding to these ligand‑gated ion channels in the chemoreceptor trigger zone and gastrointestinal vagal afferents. By inhibiting this serotonergic pathway, the drug interrupts the signaling cascade that initiates the vomiting reflex, thereby reducing both acute and delayed nausea and vomiting associated with cytotoxic agents or surgical stimuli.

Side Effects

Granisetron may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

  • Headache: mild to moderate head pain.
  • Constipation: reduced bowel movements.
  • Dizziness: sensation of light‑headedness.
  • Injection site pain: discomfort at the IV site.

Serious or Rare Side Effects

  • QT interval prolongation: potential cardiac rhythm disturbance.
  • Anaphylaxis: severe allergic reaction with airway compromise.
  • Severe hypotension: marked drop in blood pressure.
  • Serotonin syndrome: rare condition with agitation, hyperthermia, and neuromuscular abnormalities.

Precautions & Warnings

  • When using Kytril, consider the following safety measures.
  • Assess cardiac history: evaluate baseline ECG for QT prolongation risk.
  • Avoid concomitant drugs that prolong QT interval: monitor when used with other QT‑prolonging agents.
  • Monitor for allergic reactions: discontinue if signs of hypersensitivity appear.
  • Use with caution in hepatic impairment: adjust if liver function is compromised.
  • Pregnancy and breastfeeding: safety not established; weigh benefits versus risks.
  • Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Avoid Interactions

Granisetron can interact with other medicines; review the following.

Major Interactions (Avoid)

  • Other QT‑prolonging drugs (e.g., quinidine, haloperidol): increased risk of cardiac arrhythmia.
  • CYP3A4 inhibitors (e.g., ketoconazole): may raise granisetron plasma levels.
  • CYP3A4 inducers (e.g., rifampin): may reduce granisetron efficacy.

Moderate Interactions (Monitor Closely)

  • Anticholinergic agents: may enhance constipation.
  • Other antiemetics (e.g., ondansetron): additive serotonergic effects.
  • Anesthetic agents (e.g., propofol): may potentiate hypotension.

Frequently Asked Questions

Kytril, containing the active ingredient granisetron, is used to prevent and treat nausea and vomiting that occur after chemotherapy or surgery. It is effective for both acute and delayed episodes of chemotherapy‑induced nausea and vomiting, as well as for postoperative nausea and vomiting in adult patients.

Granisetron works by selectively blocking 5‑HT3 receptors located in the central nervous system and the gastrointestinal tract. By preventing serotonin from activating these receptors, it interrupts the neural pathway that triggers the vomiting reflex, thereby reducing nausea and vomiting.

The dose of Kytril is determined by the prescribing clinician based on the patient’s condition, type of chemotherapy or surgery, and individual response. The medication is administered intravenously, and the exact amount and timing are specified in the medical order.

Granisetron’s pregnancy category is listed as unknown, meaning safety has not been established. Use during pregnancy or while breastfeeding should only occur if the potential benefit justifies the potential risk, and it must be decided by the treating physician.

To order Kytril, submit an enquiry on the product page at gnhindia.com indicating the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including cold‑chain if needed) and any required import documentation.

Kytril belongs to the 5‑HT3 receptor antagonist class, similar to ondansetron. Both drugs block serotonin receptors to control nausea, but granisetron has a longer half‑life, allowing less frequent dosing in some protocols. Choice between them often depends on physician preference, patient tolerance, and specific chemotherapy regimens.

Kytril should be stored at 2‑8 °C in a refrigerator, protected from light. Do not freeze or shake the vial. If the product must be transported, maintain the cold‑chain conditions and keep it in its original packaging to preserve stability.

Kytril is given by intravenous injection. The solution can be administered directly or diluted in compatible IV fluids according to the prescriber’s instructions. Administration is typically performed by a qualified healthcare professional in a clinical setting.

Serious risks include QT interval prolongation, which can lead to cardiac arrhythmias, severe allergic reactions such as anaphylaxis, and rare cases of serotonin syndrome. Patients should be monitored for signs of cardiac rhythm changes, hypersensitivity, or unexplained neurological symptoms during treatment.

Kytril should be avoided in patients with known hypersensitivity to granisetron or any component of the formulation. It is also contraindicated in individuals with a history of significant QT prolongation or those taking other medications that markedly increase the QT interval without appropriate monitoring.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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