Drug interactions
Chlorpheniramine + Triprolidine
Severity: Moderate
Chlorpheniramine 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
Both drugs are first-generation sedating antihistamines, so using them together is therapeutic duplication. Sedation and anticholinergic effects such as dry mouth, urinary retention and confusion are additive, especially in older adults.
What this interaction means in plain words
Chlorpheniramine 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.
Chlorpheniramine belongs to Respiratory; Triprolidine belongs to Respiratory.
Why it happens
Duplicate H1-receptor blockade with additive central and peripheral antimuscarinic effects.
What to do
Avoid using two oral antihistamines together, including those hidden in combination cold products. Keep only one agent and check the contents of OTC products.
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 Chlorpheniramine
Frequently asked questions
Can I take Chlorpheniramine with Triprolidine?
MediHelp rates the interaction as moderate. Chlorpheniramine 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. Both drugs are first-generation sedating antihistamines, so using them together is therapeutic duplication. Sedation and anticholinergic effects such as dry mouth, urinary retention and confusion are additive, especially in older adults.
How serious is the interaction between Chlorpheniramine 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: Avoid using two oral antihistamines together, including those hidden in combination cold products. Keep only one agent and check the contents of OTC products.
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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