We’re all guilty of either mixing medications or eating the wrong kinds of food with our medicines. Usually the consequences aren’t that severe—you feel a little lightheaded or you get a stomachache, but after an hour or so you’re back to normal.
 
But there are some foods and medications that, when taken together, can have some serious consequences. Check out the list below to see if you’re guilty of some of these common drug-food combinations.
 
If you take blood pressure medication, don’t eat bananas. bananas
 
Eating a banana while taking blood pressure medicine can increase the amount of potassium in your body. And while potassium is normally good for you, too much can cause heart palpitations or an irregular heartbeat.

If you take thyroid medication, don’t eat walnuts.

Walnuts

Walnuts can stop your body from absorbing the healing properties in thyroid medicine. This problem isn’t limited to walnuts—that’s why most doctors recommend you take thyroid pills before bed so your body has enough time to soak in the chemicals.

If you take blood thinners, don’t eat spinach.

Spinach

Spinach contains vitamin K, which makes blood thinners less effective and leaves you at risk for blood clots.