Dobutamine
Dobutamine HCl
Also known as: Dobutrex · Posiject · 46236 · compound 81929 · dobutamini hydrochloridum · LY-174008 · Dobutamina · Dobutaminum
Reviewed by the VetSheet Veterinary TeamUpdated Apr 5, 2026Evidence-based veterinary reference
Audited v13 dosing evidence
Structured calculator evidenceHypotension during general anesthesia (extra-label)
Verified clinician required
NA
Governing clinical context (2)
- NOTE: Dobutamine is administered as an IV CRI and should be used only in critical care settings where adequate monitoring (eg, continuous BP, ECG, cardiac output, pulmonary capillary wedge pressure) can be provided.
- Dobutamine injection should be stored at room temperature, 20°C to 25°C (68°F-77°F); diluted solutions should be used within 24 hours.
Doses are a clinical reference for licensed veterinary professionals. Always confirm against the current label and the individual patient.
Overview
Dobutamine is a synthetic catecholamine and a rapid-acting, injectable positive inotropic agent.
Key clinical features include:
- Primary Use: Short-term management of acute heart failure (e.g., dilated cardiomyopathy) and cardiogenic shock.
- Hemodynamic Support: Used when fluid therapy alone fails to restore acceptable arterial blood pressure, cardiac output, or tissue perfusion.
- Clinical Pearl: Because of its extremely short half-life, it must be administered as a continuous rate infusion (CRI) in a closely monitored Intensive Care Unit (ICU) setting. Unlike dopamine, dobutamine does not rely on the release of endogenous norepinephrine, making it more reliable in catecholamine-depleted failing hearts.
Mechanism of action
Dobutamine acts primarily as a direct beta1-adrenergic agonist with mild beta2- and alpha1-adrenergic effects.
Mechanism Pathway: Dobutamine binds to beta-1 receptors on the myocardium → activates G-stimulatory (Gs) proteins → stimulates adenylyl cyclase → increases intracellular cyclic AMP (cAMP) → activates Protein Kinase A (PKA) → increases intracellular calcium influx → enhances myocardial contractility (positive inotropy).
Unlike dopamine, it does not cause the release of endogenous norepinephrine and lacks dopaminergic receptor activity. It increases cardiac output and stroke volume while decreasing left ventricular filling pressures (wedge pressures), with minimal direct effect on systemic vasculature. Higher doses can induce tachycardia.
Safety & warnings
Contraindications
- Known hypersensitivity to dobutamine or the preservative sodium bisulfite
- Idiopathic hypertrophic subaortic stenosis (IHSS)
- Uncorrected hypovolemic states
- Cardiac outflow obstruction (e.g., aortic stenosis)
Adverse effects
- Tachycardia
- Facial twitching (especially in dogs)
- Tachyphylaxis (increasing dosages required over time)
- CNS effects such as tremors or seizures (especially in cats at >5 mcg/kg/min)
- Ectopic beats
- Increased blood pressure
- Chest pain and palpitations (reported in humans)
- Proarrhythmia (ventricular arrhythmias)
- Hypertension
- Hypokalaemia (with prolonged use)
- Nausea
- Vomiting
- Seizures (particularly in cats at higher doses)
Precautions
Warning: Hypovolemic states must be corrected before administering dobutamine.
- Cardiac Arrhythmias: Use with extreme caution in patients with ventricular tachyarrhythmias or atrial fibrillation. Dobutamine can enhance atrioventricular conduction; animals with atrial fibrillation should be digitalized prior to receiving dobutamine.
- Myocardial Infarction: Use very cautiously post-MI as it may increase myocardial oxygen demand and infarct size.
- Equine Electrocardioversion: In horses receiving electrocardioversion for atrial fibrillation, stop dobutamine for at least 5 minutes before shock delivery.
Drug interactions
May result in increased incidences of ventricular arrhythmias
May antagonize the cardiac effects of dobutamine, resulting in a preponderance of alpha-adrenergic effects and increased total peripheral resistance
Synergistic effects (increased cardiac output and reduced wedge pressure) can result
May induce severe hypertension when used with dobutamine in obstetric patients
Increased insulin requirements in diabetic patients
Increased systemic vascular resistance
Increased systemic vascular resistance
Increased systemic vascular resistance (MAOI interaction)
Increased incidence of arrhythmias
Recommended prior/concurrently in cases of atrial fibrillation to prevent increased ventricular rate
Monitoring
- Heart rate and rhythm (ECG)
- Mucous membrane color and capillary refill time
- Urine flow/output
- Central venous or pulmonary wedge pressures (ideally)
- Cardiac output
- Continuous ECG
- Arterial blood pressure (direct preferred)
- Serum potassium levels
Pharmacokinetics
Half-life
Absorption
Rapidly metabolized in the GI tract; not available orally. Administered only as a constant IV infusion. Onset of action generally occurs within 2 minutes and peaks after 10 minutes.
Distribution
It is unknown if dobutamine crosses the placenta or into milk.
Metabolism
Metabolized rapidly in the liver and other tissues.
Elimination
The drug's effects diminish rapidly after cessation of therapy.
Overdose
Clinical signs reported with excessive dosage include tachycardias, increased blood pressure, nervousness, and fatigue.
Because of the drug's extremely short duration of action, temporarily halting the intravenous infusion is usually all that is required to reverse these adverse effects.
Available products
Formulations
- Injection Concentrated Solution
- Solution for Injection
- Injectable: 12.5 mg/ml solution
- Injectable: 50 mg/ml solution
Veterinary
- Dobutamine 12.5 mg/ml injectable solution
- Dobutamine 50 mg/ml injectable solution
Human-labeled
- Dobutamine HCl Injection Concentrated Solution: 12.5 mg/mL in 20 mL & 40 mL single-use vials & 100 mL pharmacy bulk packages
- Dobutamine HCL Solution for Injection: 250 mg/250 mL (1 mg/mL), 500 mg/500 mL (1 mg/mL), 500 mg/250 mL (2 mg/mL), & 1,000 mg/250 mL (4 mg/mL) preservative free
- Dobutamine Hydrochloride in 5% Dextrose Injection
- Dobutamine 12.5 mg/ml injectable solution (Dobutrex)
Regulatory status
POM (Prescription Only Medicine)
POM-V
No regulatory data for: 🇺🇸 US · 🇭🇰 HK · 🇹🇼 TW · 🇯🇵 JP · 🇰🇷 KR · 🇦🇺 AU
Storage & stability
Dobutamine injection should be stored at room temperature (15-30°C); diluted solutions should be used within 24 hours.
Client information
Note: Dobutamine is strictly an intensive care medication and is not prescribed for home use.
- Purpose: This medication is given as a continuous intravenous (IV) drip to help your pet's heart pump more effectively during a critical illness, shock, or severe heart failure crisis.
- Monitoring: Your pet will be kept in the ICU where veterinary professionals can continuously monitor their heart rate, ECG, and blood pressure.
- Safety: Because the drug works very quickly and leaves the body rapidly, the veterinary team can easily adjust the dose minute-by-minute to ensure your pet's safety and comfort.
VetSheet drug reference is intended for licensed veterinary professionals as a clinical decision-support aid, not a substitute for professional judgement or the manufacturer’s current label.