Inhaled corticosteroid
Budesonide 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 Budesonide (Budesonide) at 80/4.5 mcg, 160/4.5 mcg, 200/6 mcg, 400/12 mcg depends on whether the active ingredient Budesonide 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 Inhaled corticosteroid class that go through CYP3A4 first-pass metabolism, regular grapefruit consumption can raise plasma levels of Budesonide by a clinically meaningful margin and amplify side effects.
What to do with Budesonide
According to the prescribing information for Budesonide, if grapefruit is flagged as an interaction, the safest practice is to avoid grapefruit entirely or to discuss timing with the prescriber. Budesonide binds intracellular glucocorticoid receptors and modulates gene transcription, decreasing the synthesis of proinflammatory cytokines, chemokines and adhesion molecules and reducing the recr… A small occasional serving may be tolerable; daily large servings around the time of Budesonide dosing are not recommended at 80/4.5 mcg, 160/4.5 mcg, 200/6 mcg, 400/12 mcg.
Frequently asked questions
Can I eat grapefruit while on Budesonide? ▾
For some Inhaled corticosteroid medications, grapefruit is best avoided or limited because of CYP3A4 inhibition. Whether Budesonide specifically is affected depends on Budesonide; the prescribing information lists this. When in doubt, ask the pharmacist or check the patient leaflet.
How much grapefruit is too much with Budesonide? ▾
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 Budesonide at 80/4.5 mcg, 160/4.5 mcg, 200/6 mcg, 400/12 mcg, individual tolerance varies; the cautious choice is to avoid grapefruit if any interaction is mentioned.
Products containing Budesonide
More on Budesonide
- With alcoholBudesonide and alcohol — is it safe to drink?
- With foodShould Budesonide be taken with food?
- Side effectsBudesonide side effects: common, rare and warning signs
- Dosage guideBudesonide dosage guide: how much to take and when
- OnsetHow fast does Budesonide start working?
- DurationHow long does Budesonide last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.