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For example, when the blood pressure drug felodipine is taken with grapefruit juice rather than water, levels of the medication in the blood can more than double and result in headache, irregular ...
[34] [35] Bitter oranges (such as the Seville oranges often used in marmalade) can interfere with drugs [38] including etoposide, a chemotherapy drug, some beta blocker drugs used to treat high blood pressure, and cyclosporine, taken by transplant patients to prevent rejection of their new organs. [12] Evidence on sweet oranges is more mixed. [11]
Important: If you're taking statins or medications for conditions like high blood pressure, cholesterol, heart arrhythmia, organ transplants, or allergies, it can be dangerous to eat grapefruit ...
Grapefruit and grapefruit juice have been found to interact with numerous drugs, in many cases resulting in adverse effects. [4] This happens in two ways: one is that grapefruit can block an enzyme which metabolizes medication, [5] and if the drug is not metabolized, then the level of the drug in the blood can become too high, leading to an adverse effect. [5]
Bitter orange may have serious grapefruit-like drug interactions with medicines such as statins (to lower cholesterol), nifedipines (to lower blood pressure), some anti-anxiety drugs, and some antihistamines. [43]
According to Harvard Health Publishing, grapefruit can be dangerous when combined with drugs used for high blood pressure, high cholesterol, and depression. Check with your doctor for guidance on ...
This prevents oxidative metabolism of certain drugs by the enzyme, resulting in an elevated concentration of drug in the bloodstream. Under normal circumstances, the grapefruit juice effect is considered to be a negative interaction, and patients are often warned not to consume grapefruit or its juice when taking medication.
A single glass of grapefruit juice can interfere with your body's ability to break down a medication. Here's how to protect your health.