Drug interactions
Bremelanotide + Phenytoin
Severity: Minor
Bremelanotide and Phenytoin: 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
Bremelanotide may delay gastric emptying and could reduce the rate or extent of absorption of oral drugs. For phenytoin, which has a narrow therapeutic index, a change in absorption could affect seizure control, though this is mainly theoretical.
What this interaction means in plain words
Bremelanotide and Phenytoin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Bremelanotide belongs to Genitourinary; Phenytoin belongs to Central Nervous System.
Why it happens
Delayed gastric emptying from bremelanotide may alter oral absorption of phenytoin.
What to do
No routine dose change is needed. Check phenytoin levels and monitor seizure control if the patient reports breakthrough seizures.
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 Phenytoin
- Artemether / lumefantrine + Phenytoin Contraindicated
- Bictegravir + Phenytoin Contraindicated
- Cabotegravir + Phenytoin Contraindicated
- Doravirine + Phenytoin Contraindicated
- Elbasvir / grazoprevir + Phenytoin Contraindicated
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Phenytoin Contraindicated
Other interactions of Bremelanotide
- Bremelanotide + Bupropion-naltrexone Moderate
- Bremelanotide + Cyclosporin Moderate
- Bremelanotide + Digoxin Moderate
- Bremelanotide + Disopyramide Moderate
- Bremelanotide + Naltrexone Moderate
- Bremelanotide + Procainamide Moderate
Frequently asked questions
Can I take Bremelanotide with Phenytoin?
MediHelp rates the interaction as minor. Bremelanotide and Phenytoin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Bremelanotide may delay gastric emptying and could reduce the rate or extent of absorption of oral drugs. For phenytoin, which has a narrow therapeutic index, a change in absorption could affect seizure control, though this is mainly theoretical.
How serious is the interaction between Bremelanotide and Phenytoin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine dose change is needed. Check phenytoin levels and monitor seizure control if the patient reports breakthrough seizures.
What other medicines interact with Phenytoin?
MediHelp also lists interactions of Phenytoin with, for example, Artemether / lumefantrine, Bictegravir, Cabotegravir. The full list is on the Phenytoin page.
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