Can I eat grapefruit while taking losartan?
Generally, you should avoid grapefruit with losartan unless your clinician says it’s fine. Grapefruit can increase blood levels of some medicines by affecting drug-metabolizing enzymes in the gut and liver, which can raise the risk of side effects.
How does grapefruit interact with losartan?
Losartan is metabolized in the body. Grapefruit can interfere with enzymes that help process many drugs, leading to higher exposure. Higher exposure can make blood pressure drop more than expected in some people.
What should you do instead?
Pick alternatives such as oranges, apples, or berries. If you already ate grapefruit and are worried, monitor how you feel and consider contacting your pharmacist or prescriber for personalized guidance.
What side effects should make you call your doctor?
Seek advice promptly if you notice symptoms of low blood pressure or medication intolerance, such as dizziness (especially when standing), fainting, unusual weakness, or persistent lightheadedness.
Are there exceptions?
Some people may tolerate small amounts, but the safest approach is to avoid grapefruit products (fruit and juice) while taking losartan, unless your prescribing clinician specifically approves.
Sources
No reliable sources were provided in the prompt to cite for this interaction.