Drug interactions
Carisoprodol + Doxylamine
Severity: Moderate
Carisoprodol and Doxylamine: 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
Carisoprodol and the sedating antihistamine doxylamine both depress the central nervous system. Taken together they can cause excessive drowsiness, dizziness and impaired psychomotor performance, raising the risk of falls and accidents.
What this interaction means in plain words
Carisoprodol and Doxylamine 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.
Carisoprodol belongs to Musculoskeletal; Doxylamine belongs to Respiratory.
Why it happens
Additive CNS depressant effects (pharmacodynamic synergism).
What to do
Avoid combining where possible, especially at bedtime in older adults. If both are needed, use the lowest effective doses and warn the patient against driving or operating machinery.
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 Carisoprodol
Other interactions of Doxylamine
Frequently asked questions
Can I take Carisoprodol with Doxylamine?
MediHelp rates the interaction as moderate. Carisoprodol and Doxylamine 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. Carisoprodol and the sedating antihistamine doxylamine both depress the central nervous system. Taken together they can cause excessive drowsiness, dizziness and impaired psychomotor performance, raising the risk of falls and accidents.
How serious is the interaction between Carisoprodol and Doxylamine?
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 combining where possible, especially at bedtime in older adults. If both are needed, use the lowest effective doses and warn the patient against driving or operating machinery.
What other medicines interact with Carisoprodol?
MediHelp also lists interactions of Carisoprodol with, for example, Alfentanil, Alprazolam, Amobarbital. The full list is on the Carisoprodol page.
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