Can You Take avanafil and grapefruit juice Together?
Evidence-based clinical pharmacological assessment, adverse synergy evaluation, and administration separation protocols.
Co-administering avanafil and grapefruit juice has documented pharmacodynamic or pharmacokinetic antagonism capable of triggering acute clinical harm. Do not combine without explicit specialist oversight.
Clinical Mechanism & Evidence Details
Inhibits intestinal CYP3A4-mediated first-pass metabolism, elevating systemic drug concentrations and increasing toxic adverse effect risks.
Furanocoumarins irreversibly destroy enterocyte CYP3A4 enzymes for up to 72 hours, elevating systemic drug bioavailability into toxic ranges.
Furanocoumarins irreversibly destroy intestinal CYP3A4 enzymes, causing toxic spikes in drug exposure for up to 72 hours.
Clinical Guidance: Avoid all grapefruit, pomelo, and Seville orange products completely during pharmacotherapy.
Alcohol may enhance gastrointestinal irritation, trigger orthostatic hypotension, or alter drug absorption kinetics.
Talk to your doctor about eating grapefruit and drinking grapefruit juice while taking this medicine.
Taking other supplements, foods, or medications with this pair?
Add your morning coffee, daily multivitamins, prescription pills, and dinner foods into our instant browser-based radar to check for multi-way chain reactions.
Clinical mechanism and interaction severity derived from openFDA Drug Structured Product Labeling (Section 7), NIH Office of Dietary Supplements (ODS), and NIH NCCIH clinical botanicals database.