Product image of Ketanest-S Multi-Dose (Esketamine) supplied by GNH India

Ketanest-S Multi-Dose

Active Ingredient:
Esketamine
Origin:
EU

Ketanest-S Multi-Dose (Esketamine)

Esketamine, the active ingredient in Ketanest‑S Multi‑Dose, is a NMDA receptor antagonist presented as an injectable solution (multi‑dose vial) for intramuscular and intravenous use. It provides rapid dissociative anesthesia for induction of general anesthesia and procedural sedation in patients undergoing surgical or diagnostic procedures and is used by anesthesiologists to achieve controlled unconsciousness.

GNH India supplies Ketanest‑S Multi‑Dose as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, clinics and surgical centres worldwide, ensuring quality and regulatory compliance across global markets.

Manufacturer / TM Owner

Pfizer B.V.

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Indications & Clinical Uses

  • Esketamine acts on the NMDA receptor pathway to produce dissociative anesthesia, making it suitable for the following clinical applications:
  • Induction of anesthesia: Provides rapid onset of unconsciousness and analgesia for surgical procedures.
  • Procedural sedation: Enables safe, controlled sedation for diagnostic or minor therapeutic interventions.
  • Emergency airway management: Facilitates rapid sequence induction when conventional agents are contraindicated.

How It Works

  • Esketamine binds to the phencyclidine site of the N‑methyl‑D‑aspartate (NMDA) receptor, blocking calcium influx and inhibiting excitatory neurotransmission. This antagonism disrupts synaptic signaling in the central nervous system, producing dissociative anesthesia, analgesia, and amnesia without significant respiratory depression at therapeutic concentrations.

Side Effects

Common Side Effects

  • Dizziness or light‑headedness
  • Nausea and occasional vomiting
  • Increased blood pressure or heart rate
  • Transient visual disturbances or vivid dreams
  • Mild headache
  • Sense of dissociation or altered perception

Serious or Rare Side Effects

  • Severe hypertension or hypertensive crisis
  • Respiratory depression requiring airway support
  • Emergence reactions such as agitation or hallucinations
  • Laryngospasm or airway obstruction
  • Seizure activity

Precautions & Warnings

Esketamine requires careful monitoring and specific safety measures before and during administration:

  • Cardiovascular monitoring: Observe blood pressure and heart rate continuously.
  • Airway assessment: Ensure airway patency and be prepared for assisted ventilation.
  • Contraindication in uncontrolled hypertension: Avoid use in patients with severe hypertension.
  • Caution in psychiatric history: Use with vigilance in patients with schizophrenia or severe mood disorders.
  • Avoid concurrent use with other NMDA antagonists or potent CNS depressants.
  • Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Avoid Interactions

Esketamine may interact with several drug classes, requiring attention to dosing and monitoring:

Major Interactions (Avoid)

  • Concurrent use with other general anesthetics that depress respiration (e.g., propofol, opioids).
  • Co‑administration with monoamine oxidase inhibitors (MAOIs) due to risk of hypertensive crisis.
  • Strong CYP2B6 inhibitors (e.g., clopidogrel) that may increase esketamine plasma levels.

Moderate Interactions (Monitor Closely)

  • CYP3A4 inducers or inhibitors that can alter metabolism (e.g., rifampin, ketoconazole).
  • Antihypertensive agents that may blunt blood‑pressure elevations.
  • Serotonergic drugs that could potentiate central nervous system effects.

Frequently Asked Questions

Ketanest‑S Multi‑Dose contains esketamine, which is employed by anesthesiologists to induce general anesthesia and to provide procedural sedation for surgeries, diagnostic examinations, or minor therapeutic interventions requiring rapid, controllable unconsciousness.

Esketamine blocks the NMDA receptor’s phencyclidine site, preventing excitatory neurotransmission in the brain. This inhibition reduces neuronal firing, leading to dissociative anesthesia, analgesia, and amnesia while preserving respiratory drive at typical clinical doses.

The dose of Ketanest‑S Multi‑Dose is determined by the prescribing clinician based on the patient’s age, weight, medical condition, and the specific procedure. The product is supplied as a multi‑dose vial for preparation and administration by qualified healthcare professionals.

Safety data for esketamine in pregnancy and lactation are limited. It should only be used if the potential benefit justifies any possible risk to the fetus or infant, and the decision must be made by the treating physician in consultation with the patient.

To place an order, submit an enquiry on the product page at gnhindia.com, specifying 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 import documentation.

Compared with traditional agents such as propofol or thiopental, esketamine provides rapid onset of dissociative anesthesia with less respiratory depression, but it may cause higher blood‑pressure spikes and emergence phenomena. Choice of agent depends on the clinical scenario, patient comorbidities and provider preference.

Ketanest‑S Multi‑Dose should be stored at 2‑8 °C in a refrigerator, protected from light. The vial must not be frozen or shaken. Once removed from refrigeration, it may be kept at controlled room temperature for a limited period as indicated in the product labeling.

The injectable solution is administered intravenously or intramuscularly by a qualified clinician. The dose is drawn from the multi‑dose vial, diluted if required, and given as a rapid bolus or infusion, with continuous monitoring of vital signs throughout the procedure.

Serious risks include severe hypertension, respiratory depression requiring airway support, emergence reactions such as agitation or hallucinations, laryngospasm, and rare seizures. Prompt recognition and appropriate supportive measures are essential to mitigate these complications.

Patients with uncontrolled hypertension, known hypersensitivity to esketamine or other NMDA antagonists, severe psychiatric disorders (e.g., uncontrolled schizophrenia), or those taking contraindicated medications such as MAO inhibitors should not receive Ketanest‑S Multi‑Dose unless a risk‑benefit assessment justifies its use.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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