Lisinopril, which is sold under the brand name Zestril, belongs to a class of medications called angiotensin-converting enzyme inhibitors, or ACE inhibitors. Lisinopril is prescribed alone or with other medications to treat high blood pressure. It is also used to treat congestive heart failure and in patients recovering from heart attack. Your doctor may advise you to avoid eating foods rich in potassium while taking lisinopril.
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Potassium is a mineral that is important for the proper functioning of muscles in your body. Lisinopril and other ACE inhibitors can cause your body to retain excess potassium, which can lead to hyperkalemia, according to Drugs.com. Your doctor may advise you to avoid eating foods rich in potassium or taking potassium supplements while you are on lisinopril therapy, according to Wasau Hospital.
Before lisinopril is prescribed, inform your doctor if you are using salt substitutes containing potassium. When buying groceries, check food labels to determine the potassium content of food. If you are not sure about the potassium content of a particular food, consult your doctor. Examples of foods rich in potassium include oranges, bananas, citrus juices, dried fruits, apricots, dates, prunes, peas, beans and milk.
Lisinopril is available as a tablet that is usually taken once a day by mouth. Take the tablet with a full glass of water and avoid chewing or crushing the tablet. Take lisinopril as instructed by your doctor or pharmacist. Do not stop taking lisinopril without first consulting your doctor. Lisinopril does not cure high blood pressure and only controls symptoms.
When taking lisinopril, you may experience common symptoms such as dizziness, lightheadedness, headache, cough, upset stomach, nausea, vomiting and depression, according to Drugs.com. Consult your doctor if these symptoms do not go away within two weeks. Seek immediate medical attention if you experience breathing problems, chest pain, hives or sudden weight gain while taking lisinopril.