 [ Symptoms ] i was on atenolol 50 bid for hypertension insurance changed to 100 once a day should i take this in the a m or p m  hello i have been on 50 mg bid of atenolol for years for hypertension but my insurance recently changed it to 100 mg once a day when is the best time to take this morning or evening thank you [ Disease ] some of the most common foods beverages and additives associated with headaches include aged cheese and other tyramine containing foods for people who take monoamine oxidase mao inhibitor medications to treat their headaches it is especially important to avoid all foods containing tyramine including aged cheeses red wine alcoholic beverages and some processed meats as these foods can trigger severe high blood pressure blood flow to your brain increases when you drink alcohol red wine beer whiskey and champagne are the most commonly identified headache triggers food additives preservatives or additives contained in certain foods can trigger headaches the additives such as nitrates dilate blood vessels causing headaches in some people cold foods cold foods can cause headaches in some people it is more likely to occur if you are over heated from exercise or hot temperatures