Drug interactions
Dopamine + Trifluoperazine
Severity: Moderate
Dopamine and Trifluoperazine: 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
Trifluoperazine blocks dopamine D2 receptors and, to a lesser extent, alpha-adrenergic receptors, which can weaken the effects of dopamine. A reduced pressor or renal response may occur, and hypotension can be worsened.
What this interaction means in plain words
Dopamine and Trifluoperazine 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
Pharmacodynamic antagonism at dopamine and alpha-adrenergic receptors.
What to do
Monitor blood pressure and urine output and adjust dopamine dose to effect; use an alternative vasopressor if needed. Hold trifluoperazine in acutely unstable patients where possible.
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?
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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 Trifluoperazine?
MediHelp rates the interaction as moderate. Dopamine and Trifluoperazine 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. Trifluoperazine blocks dopamine D2 receptors and, to a lesser extent, alpha-adrenergic receptors, which can weaken the effects of dopamine. A reduced pressor or renal response may occur, and hypotension can be worsened.
How serious is the interaction between Dopamine and Trifluoperazine?
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 and urine output and adjust dopamine dose to effect; use an alternative vasopressor if needed. Hold trifluoperazine in acutely unstable patients where possible.
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.
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