Why a breakfast of grapefruit and marmalade on toast could be lethal for people taking medication

Why a breakfast of grapefruit and marmalade on toast could be lethal for people taking medication Both grapefruit and Seville oranges contain chemicals that can interact with certain drugs such as statins and antidepressants Adverse effects can include acute kidney failure, respiratory failure, internal bleeding and sudden death | UPDATED: 21:55 GMT, 26 November 2012 Grapefruit contains chemicals that can interact with certain drugs, making them more potent Doctors are warning about serious health problems caused by mixing medicines and grapefruit.