There are many studies showing the health benefits of green tea - how it helps fight cancer, heart disease and helps the brain. But now, a new study finds drinking green tea may block the benefits of a popular blood pressure medicine.
Japanese researchers say green tea blocks cells that help the body absorb the drug, Nadolol.
Fruit juices, including grapefruit, can interfere with the absorption of this blood pressure medicine, as well.
This study focused on green tea, so it's unclear whether other kinds of tea also interfere with this medication.