Drug interactions
Diphenoxylate + Lofexidine
Severity: Moderate
Diphenoxylate and Lofexidine: 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 can cause drowsiness and central nervous system depression, so taking them together may increase sedation and impair alertness. The effect is usually modest at standard doses but is more relevant in higher doses or in vulnerable patients.
What this interaction means in plain words
Diphenoxylate and Lofexidine 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.
Diphenoxylate belongs to Gastrointestinal Tract; Lofexidine belongs to Central Nervous System.
Why it happens
Additive central nervous system depressant effects (central alpha-2 agonism plus opioid activity).
What to do
Monitor for excessive sedation and hypotension, and advise patients to avoid driving or hazardous tasks until response is known. Reduce doses if oversedation occurs.
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 Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
Other interactions of Diphenoxylate
Frequently asked questions
Can I take Diphenoxylate with Lofexidine?
MediHelp rates the interaction as moderate. Diphenoxylate and Lofexidine 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 can cause drowsiness and central nervous system depression, so taking them together may increase sedation and impair alertness. The effect is usually modest at standard doses but is more relevant in higher doses or in vulnerable patients.
How serious is the interaction between Diphenoxylate and Lofexidine?
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 excessive sedation and hypotension, and advise patients to avoid driving or hazardous tasks until response is known. Reduce doses if oversedation occurs.
What other medicines interact with Lofexidine?
MediHelp also lists interactions of Lofexidine with, for example, Adagrasib, Alfuzosin, Amiodarone. The full list is on the Lofexidine page.
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