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Grapefruit juice may potentially reduce the effectiveness of tamoxifen. [84] Trazodone (Desyrel): Little or no interaction with grapefruit juice. [85] Verapamil (Calan SR, Covera HS, Isoptin SR, Verelan): atrioventricular conduction disorders. [61] Warfarin (coumadin) [86] Zolpidem (Ambien): Little or no interaction with grapefruit juice [85]
The effect of grapefruit juice with regard to drug absorption was originally discovered in 1989. The first published report on grapefruit drug interactions was in 1991 in the Lancet entitled "Interactions of Citrus Juices with Felodipine and Nifedipine", and was the first reported food-drug interaction clinically. The effects of grapefruit last ...
Grapefruit juice can act as an enzyme inhibitor, affecting the metabolism of drugs. In pharmaceutical sciences, drug interactions occur when a drug's mechanism of action is affected by the concomitant administration of substances such as foods, beverages, or other drugs.
A single glass of grapefruit juice can interfere with your body's ability to break down a medication. ... "The best way to monitor for a grapefruit medication interaction is to look out for the ...
Warfarin [15] Papaya extract Carica papaya: Warfarin Damage to GI tract mucous membranes [3] Kava: kava-kava Piper methysticum: Sedatives, sleeping pills, antipsychotics, alcohol [15] Milkvetch: Astragalus: Astragalus may interact with medications that suppress the immune system, such as cyclophosphamide. [24] It may also affect blood sugar ...
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]
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. However, some current research is focused on the potential benefits of cytochrome P450 inhibition. [3]
A single report has been made of grapefruit juice possibly increasing the effects of cilostazol; [9] some drug information sources list this as a possible interaction. [10] [11] [12] The FDA-approved labeling of cilostazol notes that grapefruit juice (which is a CYP3A4 inhibitor) increases the drug's maximum concentration by around 50%. [7]