Drug interactions
Chlorpheniramine + Ganaxolone
Severity: Moderate
Chlorpheniramine and Ganaxolone: 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
Ganaxolone commonly causes somnolence and sedation, and chlorpheniramine adds further central depressant effects. The combination can cause excessive drowsiness and impaired alertness.
What this interaction means in plain words
Chlorpheniramine and Ganaxolone 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; Ganaxolone belongs to Central Nervous System.
Why it happens
Additive CNS depression via H1 antagonism and positive modulation of GABA-A receptors by ganaxolone.
What to do
Monitor for oversedation and consider reducing the dose of one agent. Advise against driving or operating machinery until the response is known.
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 Chlorpheniramine
Other interactions of Ganaxolone
Frequently asked questions
Can I take Chlorpheniramine with Ganaxolone?
MediHelp rates the interaction as moderate. Chlorpheniramine and Ganaxolone 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. Ganaxolone commonly causes somnolence and sedation, and chlorpheniramine adds further central depressant effects. The combination can cause excessive drowsiness and impaired alertness.
How serious is the interaction between Chlorpheniramine and Ganaxolone?
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 consider reducing the dose of one agent. Advise against driving or operating machinery until the response is known.
What other medicines interact with Chlorpheniramine?
MediHelp also lists interactions of Chlorpheniramine with, for example, Belladonna and opium, Benzhydrocodone / acetaminophen, Brexanolone. The full list is on the Chlorpheniramine page.
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