THE INDIAN PHARMACIST Official Circular Pharmacy LogoTHE INDIAN PHARMACISTLearn. Explore. Practise. Excel.
RESTRICTED & HIGH-RISK MEDICINE MONOGRAPH CODE: [R-06] ID: TIP-MED-000525 ⚠️ HIGH-ALERT / SPECIALIST SUPERVISION

Ketamine Hydrochloride

Active Ingredient / Scientific Identity: Ketamine • Class: Dissociative General Anaesthetic (NMDA Receptor Antagonist)

⚖️ Compare Profile

1. Clinical & Scientific Overview

Ketamine Hydrochloride (TIP-MED-000525, Reference Code [R-06]) is classified under Anaesthetics & Critical Care Medicines as a Dissociative General Anaesthetic (NMDA Receptor Antagonist). Within the Indian regulatory and compendial framework, it is governed under Schedule X (Drugs Rules, 1945) & Psychotropic Substance.

Verified Indian Market Examples / Compendial Status:
Aneket (Neon Laboratories), Ketalar (Pfizer / Parke-Davis), Ketmin (Themis Medicare)
Representative Indian Market Examples (Educational & Regulatory Identification Only — CDSCO / NFI / Hospital Formulary): Aneket (Neon Laboratories), Ketalar (Pfizer / Parke-Davis), Ketmin (Themis Medicare) — Injection: 10 mg/mL (10 mL vial), 50 mg/mL (2 mL and 10 mL vials).
Dosage Forms & Available Strengths:
Injection: 10 mg/mL (10 mL vial), 50 mg/mL (2 mL and 10 mL vials)
Routes: Intravenous, Intramuscular

Statutory Restriction, High-Alert & Dispensing Safeguards

Indian Regulatory & Statutory Control Basis: Schedule X (Drugs Rules, 1945) & Psychotropic Substance

High-Alert Clinical Risk, Dependence & Narrow Therapeutic Index Warnings: Schedule X mandatory regulatory control due to high diversion and recreational abuse potential; causes emergence delirium/hallucinations (mitigated by midazolam), sympathetic surge (tachycardia, hypertension), and ulcerative cystitis with chronic misuse.

Mandatory Dispensing Register & Institutional Custody Protocol: Schedule X prescription must be retained for 2 years in original; institutional anaesthesia custody only.

3. Mechanism of Action & Pharmacodynamics

Non-competitive antagonist at the phencyclidine site of NMDA (N-methyl-D-aspartate) glutamate receptors, functionally dissociating thalamocortical and limbic systems while preserving airway reflexes and sympathetic tone.

4. Therapeutic Indications & Evidence-Supported Uses

  • Diagnostic and surgical induction/maintenance anaesthesia
  • Refractory status asthmaticus and procedural sedation in emergency medicine

5. Educational Dosage Context, Formulations & Administration

Educational Dosing & Regimen Summary: Specialist-Supervised Educational Reference Summary: Dosing of Ketamine must be individualised by a qualified specialist according to clinical indication, organ function, and institutional protocol (Injection: 10 mg/mL (10 mL vial), 50 mg/mL (2 mL and 10 mL vials)).

Administration & Meal Timing: Routes: Intravenous, Intramuscular. Schedule X prescription must be retained for 2 years in original; institutional anaesthesia custody only.

6. Pharmacokinetics, Metabolism & Renal/Hepatic Adjustment

Absorption & Disposition:
Exhibits dissociative general anaesthetic (nmda receptor antagonist) pharmacokinetic disposition; verify baseline renal and hepatic clearance and check for active or prolonged-half-life metabolites before repeat dosing.
Metabolism & Biotransformation:
Hepatic Phase I (CYP450) and/or Phase II conjugation or specific non-renal clearance as detailed in clinical warnings.
Elimination & Renal Adjustment:
Verify eGFR / CrCl before initiation; see specific metabolite and renal clearance notes above.
Hepatic Impairment Considerations:
Assess baseline Child-Pugh status and hepatic transaminases prior to therapy.

7. Contraindications, Precautions & High-Risk Warnings

Contraindications & Red-Flag Precautions:
  • Known severe hypersensitivity to Ketamine or formulation excipients
  • Unsupervised outpatient self-administration or dispensing without mandatory statutory prescription verification
  • Specific clinical contraindications detailed under High-Alert Warnings & Statutory Restrictions

Key Clinical Precautions: Schedule X mandatory regulatory control due to high diversion and recreational abuse potential; causes emergence delirium/hallucinations (mitigated by midazolam), sympathetic surge (tachycardia, hypertension), and ulcerative cystitis with chronic misuse.

8. Adverse Effects Profile

Common & Mechanism-Related Adverse Effects:
  • Schedule X mandatory regulatory control due to high diversion and recreational abuse potential; causes emergence delirium/hallucinations (mitigated by midazolam), sympathetic surge (tachycardia, hypertension), and ulcerative cystitis with chronic misuse.
  • Dose-dependent target-organ pharmacodynamic effects requiring clinical observation
Serious / Dose-Limiting Adverse Effects:
  • Schedule X mandatory regulatory control due to high diversion and recreational abuse potential; causes emergence delirium/hallucinations (mitigated by midazolam), sympathetic surge (tachycardia, hypertension), and ulcerative cystitis with chronic misuse.
  • High-alert toxicity, dependence/diversion risk, or severe organ-specific adverse events if administered outside protocol

9. Major Drug–Drug, Drug–Food & Drug–Herb Interactions

  • Schedule X mandatory regulatory control due to high diversion and recreational abuse potential; causes emergence delirium/hallucinations (mitigated by midazolam), sympathetic surge (tachycardia, hypertension), and ulcerative cystitis with chronic misuse.
  • Review all concomitant CNS depressants, QTc-prolonging agents, nephrotoxins, or CYP450 modulators prior to dispensing.

10. Clinical Monitoring, Patient Counselling & Storage

Clinical & Laboratory Monitoring: Schedule X prescription must be retained for 2 years in original; institutional anaesthesia custody only.

Pharmacist Patient Counselling Points:

  • Schedule X prescription must be retained for 2 years in original; institutional anaesthesia custody only.
  • Must be used strictly under direct medical supervision; never share prescription medicines or alter the prescribed dose.

Storage, Stability & Dispensing Safeguards: Schedule X prescription must be retained for 2 years in original; institutional anaesthesia custody only.

11. Visual Pharmacology & Mechanism Diagram (svg-v339-01-adme-12-step-journey)

THE 12-STEP ORAL DRUG JOURNEY THROUGH THE HUMAN BODY (LADME) Note: IV bolus enters Step 6 directly (F = 100%); Sublingual & Transdermal routes bypass Step 4–5 Portal First-Pass Metabolism 1. Oral Administration • Tablet / Capsule swallowed • Gastric emptying to duodenum pH 1.5–3.5 (Stomach) 2. Disintegration & Dissolution • Tablet breaks into granules • API dissolves in GI fluid Noyes-Whitney Dissolution Rate 3. GI Epithelial Absorption • Crosses intestinal villi • Passive / Active / P-gp efflux Small Intestine (Large Surface Area) 4. Portal Circulation • Mesenteric veins → Portal vein • Delivers blood to liver sinusoids Pre-systemic Venous Conduit 5. First-Pass Metabolism • Gut & hepatic CYP450 extraction • High: GTN, Propranolol, Morphine Determines Bioavailability (F = f_a × (1-E_H)) 6. Systemic Circulation • Hepatic vein → IVC → Heart • Unbound vs Albumin-bound drug Only FREE drug is active 7–8. Tissue Distribution (Vd) • Capillary permeation to organs • Blood-Brain & Placental barriers Vd = Dose / C_0 (L or L/kg) 9. Target Site of Action • Receptors (GPCR, Ion channel) • Enzymes & Carrier Transporters Pharmacodynamic Effect (E_max, EC50) 10. Hepatic Biotransformation • Phase I (CYP450 Oxidation/Hydrolysis) • Phase II (Glucuronidation/Sulfation) Converts lipophilic drug → hydrophilic metabolite 11. Renal & Biliary Elimination • Nephron: Filtration + Secretion − Reabsorption • Biliary excretion & Enterohepatic recycling Total Clearance CL_tot = CL_renal + CL_hepatic 12. Excretion from the Body • Urine (Primary polar metabolite route) • Bile/Faeces, Expired Air, Sweat, Milk Elimination Half-Life t1/2 = (0.693 × Vd) / CL
svg-v339-01-adme-12-step-journey — 8.1 Complete 12-Step Journey of an Orally Administered Drug (ADME): Figure 8.1: The 12-step physiological journey of a typical orally administered solid dosage form through Liberation, Absorption, Distribution, Metabolism, and Excretion (LADME). Note: Parenteral (IV), sublingual, and inhalational routes bypass gastrointestinal absorption and/or hepatic first-pass metabolism.

12. Authoritative References, Regulatory Sources & Editorial Disclaimer

Primary Compendial & Guideline Reference: Drugs and Cosmetics Act, 1940 & Rules, 1945 (Schedule H / H1 / X); NDPS Act, 1985 & Essential Narcotic Drugs (END) Notification; Indian Pharmacopoeia (IP) & National Formulary of India (NFI).

Official Verification Portals: CDSCO — Drugs & Cosmetics Act and Rules (Schedules H, H1, X) • Department of Revenue — Narcotic Drugs and Psychotropic Substances (NDPS) Act • Indian Pharmacopoeia Commission (IPC) — National Formulary of India

Last Medically & Pharmaceutically Reviewed: 2026-11-10 • Verification Status: VERIFIED_EDUCATIONAL_CONTENT

Educational & Clinical Disclaimer: This reference profile is published solely for pharmacy education, academic study, and professional clinical reference. It does not substitute for patient-specific clinical judgement, qualified specialist oncology/medical supervision, or official CDSCO/IP prescribing information. Never self-medicate with prescription, Schedule H/H1/X, NDPS, or oncology medicines.