Drug interactions
Dopamine + Phendimetrazine
Severity: Moderate
Dopamine and Phendimetrazine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Both agents stimulate the sympathetic nervous system, so combining intravenous dopamine with phendimetrazine can produce additive rises in blood pressure and heart rate. Tachyarrhythmias and hypertensive responses may occur, particularly in patients with cardiovascular disease.
What this interaction means in plain words
Dopamine and Phendimetrazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive adrenergic stimulation, with phendimetrazine promoting release of norepinephrine and dopamine acting directly on adrenergic and dopaminergic receptors.
What to do
Monitor blood pressure, heart rate and ECG continuously during dopamine infusion in patients taking phendimetrazine, and titrate dopamine to the lowest effective rate. Consider holding the anorectic while the patient is receiving vasopressor therapy.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dopamine and Phendimetrazine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Dopamine
- Dihydroergotamine intranasal + Dopamine Contraindicated
- Dihydroergotamine + Dopamine Contraindicated
- Dopamine + Promethazine Contraindicated
- Dopamine + Selegiline transdermal Contraindicated
- Amitriptyline + Dopamine Major
- Clomipramine + Dopamine Major
Frequently asked questions
Can I take Dopamine with Phendimetrazine?
MediHelp rates the interaction as moderate. Dopamine and Phendimetrazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both agents stimulate the sympathetic nervous system, so combining intravenous dopamine with phendimetrazine can produce additive rises in blood pressure and heart rate. Tachyarrhythmias and hypertensive responses may occur, particularly in patients with cardiovascular disease.
How serious is the interaction between Dopamine and Phendimetrazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, heart rate and ECG continuously during dopamine infusion in patients taking phendimetrazine, and titrate dopamine to the lowest effective rate. Consider holding the anorectic while the patient is receiving vasopressor therapy.
What other medicines interact with Dopamine?
MediHelp also lists interactions of Dopamine with, for example, Dihydroergotamine intranasal, Dihydroergotamine, Promethazine. The full list is on the Dopamine page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
