Drinking fruit juice 'may stop medication working'

Drinking fruit juice dramatically reduces the effectiveness of drugs used to treat cancer, heart conditions and high blood pressure, scientists say.
Research has shown that orange, apple and grapefruit juice can also wipe out the benefits of some antibiotics and hay-fever pills.
It is thought the drinks stop drugs from entering the bloodstream and getting to work in the body - possibly rendering them useless.
The potential effects are so serious, researchers warned, that if in doubt, patients should swap fruit juices for water when on medication.
Researcher David Bailey said: 'This is just the tip of the iceberg. I'm sure we'll find more and more drugs that are affected this way.'
Twenty years ago, Professor Bailey showed that grapefruit juice dangerously magnifies the effect of the blood pressure drug felodipine.
His findings led to warnings that the drink should be avoided by those on some medicines.
The latest study shows that fruit juices can also reduce the power of medicines - potentially stopping them from doing any good.