Can I eat grapefruit while taking the medication Lisinopril?

There is 1 alcohol/food/lifestyle interaction with lisinopril:

lisinopril ↔ food
Moderate Food Interaction

It is recommended that if you are taking lisinopril you should be advised to avoid moderately high or high potassium dietary intake. This can cause high levels of potassium in your blood. Do not use salt substitutes or potassium supplements while taking lisinopril, unless your doctor has told you to.

https://www.drugs.com/food-interactions/lisinopril.html

What should I avoid while taking lisinopril?
Drinking alcohol can further lower your blood pressure and may increase certain side effects of lisinopril.

Avoid becoming overheated or dehydrated during exercise, in hot weather, or by not drinking enough fluids. Lisinopril can decrease sweating and you may be more prone to heat stroke.

Do not use salt substitutes or potassium supplements while taking this medicine, unless your doctor has told you to.

Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.

https://www.drugs.com/lisinopril.html