Drinking fruit juice nutralizes medications?

Somehow this article feels like something doctors will have to retract within a few years, when they regain their sanity. Otherwise, one must wonder how you are to get as many fruits and vegetables as are recommended for a healthy diet, if you can't have any juices while on medication.

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.