Grapefruit juice supports cancer therapy

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Grapefruit juice supports cancer therapy

For some cancer patients, a glass of grapefruit juice, which is enjoyed regularly, may help to reduce their medication doses and thus the side effects. In a study, US researchers investigated the interaction of food with a drug. The result: grapefruit can make cancer drugs more effective.

The juice increases the bioavailability of the active ingredient sirolimus used in cancer patients. The fruit juice inhibits enzymes in the intestine that normally break down these active ingredients. This means that the agent stays in the body longer and the required dose is lower to achieve the same effect. One glass a day increases the amount of medication in the blood by up to 350 percent.

Usually, you are warned about taking certain medicines and grapefruit juice at the same time. The juice generally inhibits the absorption of substances, e.g. are contained in some beta blockers and may reduce the effectiveness of the drug. In the case described above, the juice seems to have positive effects. However, before patients use the interaction with cancer drugs, they should consult their doctor. (pm)

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Image: Rainer Sturm /

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