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Vasopressin Injection, USP
For intravenous use.
INDICATIONS AND USAGE
Vasopressin injection is indicated to increase blood pressure in adults with vasodilatory shock who remain hypotensive despite fluids and catecholamines.
IMPORTANT SAFETY INFORMATION
Vasopressin injection is contraindicated in patients with known allergy or hypersensitivity to 8-L-arginine vasopressin or chlorobutanol.
WARNINGS AND PRECAUTIONS
Worsening Cardiac Function – A decrease in cardiac index may be observed with the use of vasopressin.
Reversible Diabetes Insipidus - Patients may experience reversible diabetes insipidus, manifested by the development of polyuria a dilute urine, and hypernatremia after cessation of treatment with vasopressin.
The following adverse reactions associated with the use of vasopressin were identified in the literature. Because these reactions are reported voluntarily from a population of uncertain size, it is not possible to estimate their frequency reliably or to establish a causal relationship to drug exposure:
Bleeding/lymphatic system disorders: Hemorrhagic shock, decreased platelets, intractable bleeding
Cardiac disorders: Right heart failure, atrial fibrillation, bradycardia, myocardial ischemia
Gastrointestinal disorders: Mesenteric ischemia
Hepatobiliary: Increased bilirubin levels
Renal/urinary disorders: Acute renal insufficiency
Vascular disorders: Distal limb ischemia
Skin: Ischemic lesions
Pressor effects of catecholamines and vasopressin injection are expected to be additive
Indomethacin may prolong effects of vasopressin injection
Co-administration of ganglionic blockers or drugs causing SIADH may increase the pressor response
Co-administration of drugs causing diabetes insipidus may decrease the pressor response
USE IN SPECIFIC POPULATIONS
Pregnancy: May induce tonic uterine contractions.
Pediatric Use: Safety and effectiveness have not been established.
Geriatric Use: Dose selection for an elderly patient should be cautious.
Overdosage with vasopressin injection can be expected to manifest as consequences of vasoconstriction of various vascular beds (peripheral, mesenteric, and coronary) and as hyponatremia. In addition, overdosage may lead less commonly to ventricular tachyarrhythmias (including Torsade de Pointes), rhabdomyolysis, and non-specific gastrointestinal symptoms.
Direct effects will resolve within minutes of withdrawal of treatment.
For additional safety information, please see Full Prescribing Information.
You are encouraged to report adverse drug events to American Regent, Inc. at 1-800-734-9236 or to the FDA by visiting www.fda.gov/medwatch or calling 1-800-FDA-1088.