Dobutamine and Metoprolol: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Metoprolol
Dobutamine
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
Decreased DOBUTamine efficacy
Interaction Deep Dive
A clinical study demonstrated that carvedilol, to a lesser extent metoprolol, inhibited hemodynamic response to DOBUTamine when given concurrently. Hemodynamic parameters should be carefully monitored when DOBUTamine is given with metoprolol1.
Why it happens (mechanism)
Antagonism of DOBUTamine effects by beta adrenergic blockade
Literature reports
1 report — tap to read
a) In a crossover study (n=34) of patients with chronic heart failure (HF), carvedilol and, to a lesser extent, metoprolol inhibited hemodynamic response to DOBUTamine. Patients with a New York Heart Association functional class of II to IV, a left ventricular ejection fraction (LVEF) of less than 35%, and who were currently on furosemide and an ACE inhibitor were included. During the first part, DOBUTamine was infused in increasing doses (5, 10, 15, and 20 mcg/kg/min) and hemodynamic variables were calculated. The second hemodynamic study occurred 9 to 12 months later, after the patients had continuously been on either metoprolol (n=15) or carvedilol (n=14). Metoprolol demonstrated a slight, but not significant, increase in mean arterial pressure (MAP) at DOBUTamine infusion rates of 15 and 20 mcg/kg/min. Systemic vascular resistance (SVR) declined in a dose-dependent manner in response. Conversely, in patients taking carvedilol, DOBUTamine infusions caused a dose-dependent increase in MAP and a similar increase in SVR, as opposed to the decline in SVR seen in the control. Pulmonary artery pressure (PAP) and pulmonary vascular resistance (PVR) showed similar responses as MAP and SVR. After metoprolol therapy, DOBUTamine caused a similarly decreased but blunted PAP and PVR response, while treatment with DOBUTamine after carvedilol treatment caused a significant dose-dependent increase in PAP and PVR response. Overall, the study concluded that the response of hemodynamic factors (MAP, SVR, PAP, and PVR) to DOBUTamine therapy can be greatly influenced by the type of concomitant beta-blocker therapy 1.
Common questions
Can I take Dobutamine and Metoprolol together?
Decreased DOBUTamine efficacy Always confirm with your pharmacist or prescriber before making any change.
How serious is the Dobutamine and Metoprolol interaction?
It is rated minor. Usually limited clinical impact.
How quickly could this interaction happen?
The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Dobutamine or Metoprolol need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (1)
- Metra M, Nodari S, D'Aloia A, et al: Beta-blocker therapy influences the hemodynamic response to inotropic agents in patients with heart failure: a randomized comparison of dobutamine and enoximone before and after chronic treatment with metoprolol or carvedilol. J Am Coll Cardiol 2002; 40(7):1248-1258. PubMed
Keep reading about Metoprolol
Keep reading about Dobutamine
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Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
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