Drug interactions
Amitriptyline + Diazepam intranasal
Severity: Moderate
Amitriptyline and Diazepam intranasal: 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
Taking a benzodiazepine with a sedating tricyclic antidepressant produces additive central nervous system depression. Drowsiness, impaired psychomotor performance and, at higher doses, respiratory depression may occur.
What this interaction means in plain words
Amitriptyline and Diazepam intranasal 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.
Why it happens
Additive CNS depression through GABA-A potentiation by diazepam and sedative antihistaminic and anticholinergic actions of amitriptyline.
What to do
Use the lowest effective doses and monitor for excessive sedation and respiratory depression, especially in elderly patients. Advise patients to avoid driving and alcohol.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Amitriptyline and Diazepam intranasal, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Amitriptyline
- Amitriptyline + Isocarboxazid Contraindicated
- Amitriptyline + Methylene blue Contraindicated
- Amitriptyline + Phenelzine Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amitriptyline + Procarbazine Contraindicated
- Amitriptyline + Safinamide Contraindicated
Frequently asked questions
Can I take Amitriptyline with Diazepam intranasal?
MediHelp rates the interaction as moderate. Amitriptyline and Diazepam intranasal 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. Taking a benzodiazepine with a sedating tricyclic antidepressant produces additive central nervous system depression. Drowsiness, impaired psychomotor performance and, at higher doses, respiratory depression may occur.
How serious is the interaction between Amitriptyline and Diazepam intranasal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective doses and monitor for excessive sedation and respiratory depression, especially in elderly patients. Advise patients to avoid driving and alcohol.
What other medicines interact with Amitriptyline?
MediHelp also lists interactions of Amitriptyline with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Amitriptyline page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
