Lisinopril is a white to off-white, crystalline powder, with a molecular weight of 441.52. It is soluble in water and sparingly soluble in methanol and practically insoluble in ethanol.
Zestril (lisinopril) (lye-SIH-no-pril, is a drug of the angiotensin converting enzyme (ACE) inhibitor class that is primarily used in treatment of hypertension, congestive heart failure, heart attacks and also in preventing renal and retinal complications of diabetes.
Historically, lisinopril was the third ACE inhibitor, after captopril and enalapril that was introduced into therapy in early 1990s.[1] Lisinopril has a number of properties that distinguish it from other ACE inhibitors: it is hydrophilic, has long half life and tissue penetration and is not metabolized by the liver.

Zestril (lisinopril) comes as a tablet. It is usually taken once a day. To help you remember to take Zestril (lisinopril), take it around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take Zestril (lisinopril) exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Your doctor will probably start you on a low dose of Zestril (lisinopril) and gradually increase your dose. Zestril (lisinopril) controls high blood pressure and heart failure but does not cure them. Continue to take Zestril (lisinopril) even if you feel well. Do not stop taking lisinopril without talking to your doctor.

SIDE EFFECTS:

Zestril (lisinopril) may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
    - cough
    - dizziness
    - headache
    - excessive tiredness
    - upset stomach
    - diarrhea
    - weakness
    - sneezing
    - runny nose
    - decrease in sexual ability
    - rash

Some side effects can be serious. The following symptoms are uncommon, but if you experience any of them, call your doctor immediately:
    - swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
    - hoarseness
    - difficulty breathing or swallowing
    - fever, sore throat, chills, and other signs of infection
    - yellowing of the skin or eyes
    - lightheadedness
    - fainting
    - chest pain