Last reviewed 2026-04-23 · How we verify

IV dexmedetomidine

Dexmedetomidine is a selective alpha-2 adrenergic receptor agonist that produces sedation, analgesia, and anxiolysis by activating presynaptic and postsynaptic alpha-2 receptors in the central nervous system.

Dexmedetomidine is a selective alpha-2 adrenergic receptor agonist that produces sedation, analgesia, and anxiolysis by activating presynaptic and postsynaptic alpha-2 receptors in the central nervous system. Used for Sedation in intensive care unit patients, Perioperative sedation and analgesia, Procedural sedation.

At a glance

Mechanism of action

Dexmedetomidine binds with high selectivity to alpha-2 adrenergic receptors, which are distributed throughout the brain and spinal cord. This activation leads to decreased norepinephrine release and reduced neuronal firing, resulting in sedative and analgesic effects. The drug produces a unique sedation profile characterized by maintained airway reflexes and the ability to be aroused, distinguishing it from other sedatives.

Approved indications

• Sedation in intensive care unit patients
• Perioperative sedation and analgesia
• Procedural sedation

Common side effects

• Hypotension
• Bradycardia
• Hypertension (transient, initial)
• Dry mouth
• Rebound hypertension

Key clinical trials

• Effect of Lidocaine Infusion Versus Dexmedemidine Infusion on the Neurocognitive Function of Elderly Patients Undergoing Endoscopic Retrograde Cholangiopancreatography(ERCP): a Randomized, Controlled Trial. (NA)
• Safety and Efficacy of Dexmedetomidate vs. Midazolam for Procedural Sedation During Medical Thoracoscopy (PHASE3)
• Using Lidocaine or Dexmedetomidine to Help Control Blood Pressure Spikes From a Tourniquet During Knee Surgery (PHASE2)
• The Effect of Dexmedetomidine Infusion Alone Versus the Combination of Dexmedetomidine and Melatonin on Reduction of Post-operative Delirium (POD) After Open Brain Surgeries (PHASE4)
• Comparison of Anesthetic Techniques for Early Recovery After Ankle Arthroscopy (NA)
• Safety and Efficacy of Dexmedetomidine in Controlling Hemodynamics During Resection of Active Thyroid Secreting Tumors (PHASE2, PHASE3)
• Attenuate the Stress Response in Laparoscopic Cholecystectomy (PHASE4)
• Transition From Acute to Chronic Opioid Use and Chronic Pain (EARLY_PHASE1)

Primary sources

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