Drug interactions
Phendimetrazine + Quetiapine
Severity: Minor
Phendimetrazine and Quetiapine: minor 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
Phendimetrazine is a sympathomimetic anorectic whose stimulant effect may partly offset quetiapine sedation. Both can affect heart rate and blood pressure, and the net clinical effect is unpredictable.
What this interaction means in plain words
Phendimetrazine and Quetiapine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Opposing CNS stimulant and sedative effects; the interaction is not well characterised.
What to do
Monitor blood pressure, heart rate and psychiatric symptoms, as stimulants may worsen psychosis. Reassess the need for the anorectic if mental state changes.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Frequently asked questions
Can I take Phendimetrazine with Quetiapine?
MediHelp rates the interaction as minor. Phendimetrazine and Quetiapine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Phendimetrazine is a sympathomimetic anorectic whose stimulant effect may partly offset quetiapine sedation. Both can affect heart rate and blood pressure, and the net clinical effect is unpredictable.
How serious is the interaction between Phendimetrazine and Quetiapine?
MediHelp rates it minor, 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 psychiatric symptoms, as stimulants may worsen psychosis. Reassess the need for the anorectic if mental state changes.
What other medicines interact with Quetiapine?
MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.
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