Drug interactions
Difelikefalin + Pentazocine
Severity: Moderate
Difelikefalin and Pentazocine: 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
Difelikefalin is a peripherally restricted kappa-opioid agonist that can cause somnolence and dizziness. With pentazocine, which is also a sedating opioid, drowsiness and dizziness may be additive.
What this interaction means in plain words
Difelikefalin and Pentazocine 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.
Difelikefalin belongs to Dermatology; Pentazocine belongs to Musculoskeletal.
Why it happens
Additive CNS depressant effects from kappa-opioid receptor activity.
What to do
Monitor for sedation and dizziness, and counsel the patient about fall risk and driving. Reduce doses if impairment develops.
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 Pentazocine
- Calcium / magnesium / potassium / sodium oxybates + Pentazocine Contraindicated
- Olanzapine / samidorphan + Pentazocine Contraindicated
- Pentazocine + Phenelzine Contraindicated
- Pentazocine + Tranylcypromine Contraindicated
- Alfentanil + Pentazocine Major
- Alprazolam + Pentazocine Major
Other interactions of Difelikefalin
- Acetazolamide + Difelikefalin Moderate
- Alprazolam + Difelikefalin Moderate
- Amantadine + Difelikefalin Moderate
- Amitriptyline + Difelikefalin Moderate
- Amobarbital + Difelikefalin Moderate
- Asenapine + Difelikefalin Moderate
Frequently asked questions
Can I take Difelikefalin with Pentazocine?
MediHelp rates the interaction as moderate. Difelikefalin and Pentazocine 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. Difelikefalin is a peripherally restricted kappa-opioid agonist that can cause somnolence and dizziness. With pentazocine, which is also a sedating opioid, drowsiness and dizziness may be additive.
How serious is the interaction between Difelikefalin and Pentazocine?
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 dizziness, and counsel the patient about fall risk and driving. Reduce doses if impairment develops.
What other medicines interact with Pentazocine?
MediHelp also lists interactions of Pentazocine with, for example, Calcium / magnesium / potassium / sodium oxybates, Olanzapine / samidorphan, Phenelzine. The full list is on the Pentazocine page.
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