Drug interactions
Difelikefalin + Pimavanserin
Severity: Minor
Difelikefalin and Pimavanserin: minor 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 agents can cause somnolence, dizziness, and impaired alertness. Used together they may increase sedation and the risk of falls.
What this interaction means in plain words
Difelikefalin and Pimavanserin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Difelikefalin belongs to Dermatology; Pimavanserin belongs to Central Nervous System.
Why it happens
Additive CNS depressant effects.
What to do
Monitor for excessive drowsiness and dizziness, especially in older patients. Counsel on fall precautions.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Pimavanserin
- Lefamulin + Pimavanserin Contraindicated
- Pimavanserin + Pimozide Contraindicated
- Pimavanserin + Vandetanib Contraindicated
- Adagrasib + Pimavanserin Major
- Amiodarone + Pimavanserin Major
- Amisulpride + Pimavanserin 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 Pimavanserin?
MediHelp rates the interaction as minor. Difelikefalin and Pimavanserin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Both agents can cause somnolence, dizziness, and impaired alertness. Used together they may increase sedation and the risk of falls.
How serious is the interaction between Difelikefalin and Pimavanserin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for excessive drowsiness and dizziness, especially in older patients. Counsel on fall precautions.
What other medicines interact with Pimavanserin?
MediHelp also lists interactions of Pimavanserin with, for example, Lefamulin, Pimozide, Vandetanib. The full list is on the Pimavanserin page.
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