Green tea can make blood pressure drugs 'less effective'

• The blood pressure-lowering drug nadolol is less effective after the drink
• Drink cut the amount of drug that made its way into bloodstream by 75%
• May also dilute effect of other medicines, such as hayfever drug fexofenadine

It is the healthy choice of many people with high blood pressure. But green tea could actually stop their pills from working properly. The blood pressure-lowering drug nadolol is less effective after drinking green tea, a study found.

The researchers advised those taking nadolol to avoid green tea – and warned that the popular drink may also dilute the effect of some other medicines.The warning is particularly pertinent to blood pressure patients, as some may switched to green tea in a bid to lower their intake of caffeine.

In addition, some studies have credited green tea with lowering blood pressure. Japanese researchers measured the blood pressure of ten healthy men and women after taking nadolol. 

They were given the drug twice, once after drinking around two cups of green tea a day for two weeks and again after drinking water. Drinking green tea cut the amount of drug that made its way into the bloodstream by three-quarters. Read more: http://www.dailymail.co.uk/health/article-2538683/Green-tea-make-blood-pressure-drugs-effective.html