Drug interactions
Chlordiazepoxide-clidinium + Dexchlorpheniramine
Severity: Moderate
Chlordiazepoxide-clidinium and Dexchlorpheniramine: 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
This sedating antihistamine adds to benzodiazepine-induced CNS depression. Clidinium and dexchlorpheniramine also share anticholinergic effects, which may increase dry mouth, confusion and urinary retention.
What this interaction means in plain words
Chlordiazepoxide-clidinium and Dexchlorpheniramine 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.
Chlordiazepoxide-clidinium belongs to Gastrointestinal Tract; Dexchlorpheniramine belongs to Respiratory.
Why it happens
Additive CNS depression from H1 antagonism and GABA-A potentiation, plus additive anticholinergic effects.
What to do
Monitor for sedation and anticholinergic effects, especially in older adults. Consider 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 Chlordiazepoxide-clidinium
- Alfentanil + Chlordiazepoxide-clidinium Major
- Alprazolam + Chlordiazepoxide-clidinium Major
- Amobarbital + Chlordiazepoxide-clidinium Major
- Belladonna and opium + Chlordiazepoxide-clidinium Major
- Benzhydrocodone / acetaminophen + Chlordiazepoxide-clidinium Major
- Brexanolone + Chlordiazepoxide-clidinium Major
Other interactions of Dexchlorpheniramine
- Alprazolam + Dexchlorpheniramine Moderate
- Amisulpride + Dexchlorpheniramine Moderate
- Amitriptyline + Dexchlorpheniramine Moderate
- Amobarbital + Dexchlorpheniramine Moderate
- Asenapine + Dexchlorpheniramine Moderate
- Azelastine-fluticasone + Dexchlorpheniramine Moderate
Frequently asked questions
Can I take Chlordiazepoxide-clidinium with Dexchlorpheniramine?
MediHelp rates the interaction as moderate. Chlordiazepoxide-clidinium and Dexchlorpheniramine 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. This sedating antihistamine adds to benzodiazepine-induced CNS depression. Clidinium and dexchlorpheniramine also share anticholinergic effects, which may increase dry mouth, confusion and urinary retention.
How serious is the interaction between Chlordiazepoxide-clidinium and Dexchlorpheniramine?
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 sedation and anticholinergic effects, especially in older adults. Consider a non-sedating antihistamine.
What other medicines interact with Chlordiazepoxide-clidinium?
MediHelp also lists interactions of Chlordiazepoxide-clidinium with, for example, Alfentanil, Alprazolam, Amobarbital. The full list is on the Chlordiazepoxide-clidinium page.
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