Two out every three patients who visit a Doctor leave with at least one prescription medication. Almost 40% of the US population receive prescriptions for four or more medications. Consequences of drug interactions with food and beverages are more common the more prescription medications a person takes. Examples of drug interactions with food and beverages: Grapefruit juice can cause an increased level of certain blood pressure medications, anti-anxiety medication Buspar and the insomnia medication Halcion. Licorice can increase the level of the heart medication digoxin and reduce the effects of the blood pressure medications hydrochlorothiazide and spironolactone. Chocolate can potentiate the class of antidepressants called monoamine oxidase inhibitors (MAOI) and.