Name Glycopyrronium Bromide
Classes Anticholinergic Agent
Muscarinic Anticholinergic Agent
Diseases

Glycopyrronium Bromide

Glycopyrronium Bromide is an antimuscarinic agent that competitively inhibits acetylcholine at muscarinic receptors. It exerts its effects on various organ systems by blocking the actions of acetylcholine, leading to decreased smooth muscle contraction and secretions.

Glycopyrronium Bromide Injection is an anticholinergic indicated:

  • in anesthesia (adult and pediatric patients)
  • for reduction of airway or gastric secretions, and volume and acidity of  gastric secretions, and blockade of cardiac inhibitory reflexes during induction of anesthesia and intubation,
  • intraoperatively to counteract surgically or drug-induced or vagal reflex-associated arrhythmias, and 
  • for protection against peripheral muscarinic effects of cholinergic agents.

Orally Disintegrating Tablets: 1.7 mg of glycopyrrolate

Injection:
Glycopyrrolate Injection may be administered intramuscularly, or intravenously, without dilution, in the following indications:

Adults:

  • Preanesthetic Medication: Administered intramuscularly at a dosage of 0.004 mg/kg, approximately 30 to 60 minutes before the expected induction of anesthesia.
  • Intraoperative Medication: Administer a single intravenous dose of 0.1 mg, with the option for additional doses, as necessary, at intervals of 2 to 3 minutes.
  • Reversal of Neuromuscular Blockade: Use 0.2 mg for every 1 mg of neostigmine or 5 mg of pyridostigmine.
  • Peptic Ulcer: Administer 0.1 mg intravenously or intramuscularly at 4-hour intervals, repeated 3 or 4 times daily.

Pediatric patients

  • Preanesthetic Medication: Administer 0.004 mg/kg intramuscularly, given 30 to 60 minutes before the expected induction of anesthesia. For patients under 2 years of age, the dosage may be increased to a maximum of 0.009 mg/kg.
  • Intraoperative Medication: Administer 0.004 mg/kg intravenously, with a maximum single dose not to exceed 0.1 mg. Repeat as necessary at intervals of 2 to 3 minutes.
  • Reversal of Neuromuscular Blockade: Use 0.2 mg for each 1 mg of neostigmine or 5 mg of pyridostigmine.
  • Peptic Ulcer: Glycopyrrolate Injection is not recommended for the treatment of peptic ulcer in pediatric patients.
  • Caution: Do not use the prefilled syringe to administer a dose less than 0.1 mg (0.5 mL).

Adverse reactions may occur and can vary in frequency. Common to less common adverse reactions may include:

  • Dry mouth
  • Constipation
  • Urinary retention
  • Blurred vision
  • Tachycardia
  • Headache
  • Dizziness
  • Nausea
  • Confusion
  • Allergic reactions (rare)
  • Anticholinergic Effects: Glycopyrronium bromide may cause anticholinergic effects, leading to dry mouth, blurred vision, urinary retention, and constipation.
  • Cardiovascular Effects: Use with caution in patients with cardiovascular diseases, as it may cause tachycardia.
  • Renal Impairment: Adjust dosage in patients with renal impairment.
  • Hepatic Impairment: Use with caution in patients with hepatic impairment.
  • Heat Prostration: Avoid exposure to high temperatures due to the risk of heat prostration.
  • Glaucoma: Use cautiously in patients with narrow-angle glaucoma.

Contraindication

Glycopyrronium bromide is contraindicated in individuals with Known hypersensitivity to glycopyrronium bromide or any component of the formulation.

Glycopyrronium bromide is contraindicated in individuals with:

  • Severe ulcerative colitis
  • Myasthenia gravis
  • Glaucoma
  • Obstructive uropathy