Atypical antidepressant / serotonin modulator
Trazodone and grapefruit: a real interaction?
Grapefruit is famous as the juice that interacts with medications, and the warning is real for a number of drugs. Whether it matters specifically for Trazodone (Trazodone) at 50mg, 100mg, 150mg, 300mg depends on whether the active ingredient Trazodone is metabolised by CYP3A4 in the gut wall and how much that pathway contributes to first-pass metabolism.
The CYP3A4 mechanism
Grapefruit (and its juice) inhibits CYP3A4 enzymes in the gut wall, increasing the absorbed dose of medications metabolised by that enzyme. For drugs in the Atypical antidepressant / serotonin modulator class that go through CYP3A4 first-pass metabolism, regular grapefruit consumption can raise plasma levels of Trazodone by a clinically meaningful margin and amplify side effects.
What to do with Trazodone
According to the prescribing information for Trazodone, if grapefruit is flagged as an interaction, the safest practice is to avoid grapefruit entirely or to discuss timing with the prescriber. Trazodone is classified as a serotonin antagonist and reuptake inhibitor (SARI). A small occasional serving may be tolerable; daily large servings around the time of Trazodone dosing are not recommended at 50mg, 100mg, 150mg, 300mg.
Frequently asked questions
Can I eat grapefruit while on Trazodone? ▾
For some Atypical antidepressant / serotonin modulator medications, grapefruit is best avoided or limited because of CYP3A4 inhibition. Whether Trazodone specifically is affected depends on Trazodone; the prescribing information lists this. When in doubt, ask the pharmacist or check the patient leaflet.
How much grapefruit is too much with Trazodone? ▾
For drugs where the interaction matters, even modest daily grapefruit intake (one whole grapefruit or one large glass of juice) can shift drug levels noticeably. For Trazodone at 50mg, 100mg, 150mg, 300mg, individual tolerance varies; the cautious choice is to avoid grapefruit if any interaction is mentioned.
Products containing Trazodone
More on Trazodone
- With alcoholTrazodone and alcohol — is it safe to drink?
- With foodShould Trazodone be taken with food?
- Side effectsTrazodone side effects: common, rare and warning signs
- Dosage guideTrazodone dosage guide: how much to take and when
- OnsetHow fast does Trazodone start working?
- DurationHow long does Trazodone last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.