Drug interactions
Quetiapine + Triprolidine
Severity: Moderate
Quetiapine and Triprolidine: 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
Quetiapine is strongly sedating, and combining it with a sedating antihistamine increases drowsiness, dizziness and orthostatic effects. Anticholinergic effects may also be additive.
What this interaction means in plain words
Quetiapine and Triprolidine 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.
Quetiapine belongs to Central Nervous System; Triprolidine belongs to Respiratory.
Why it happens
Additive CNS depression through H1 receptor antagonism by both drugs.
What to do
Monitor for oversedation and orthostatic hypotension, especially in older adults. Prefer a non-sedating antihistamine.
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 Triprolidine
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 Quetiapine with Triprolidine?
MediHelp rates the interaction as moderate. Quetiapine and Triprolidine 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. Quetiapine is strongly sedating, and combining it with a sedating antihistamine increases drowsiness, dizziness and orthostatic effects. Anticholinergic effects may also be additive.
How serious is the interaction between Quetiapine and Triprolidine?
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 for oversedation and orthostatic hypotension, especially in older adults. Prefer a non-sedating antihistamine.
What other medicines interact with Triprolidine?
MediHelp also lists interactions of Triprolidine with, for example, Belladonna and opium, Benzhydrocodone / acetaminophen, Brexanolone. The full list is on the Triprolidine page.
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