Lisinopril side effects

Lisinopril is a treatment for high blood pressure which belongs to a group of medications known as ACE (angiotensin-converting-enzyme) blockers, which work by constricting the blood vessels in order to cause them to relax, making it easier for the blood to circulate and relieving tension in the heart.

ACE blockers are generally considered to be relatively safe medications, however on some occasions patients may experience side effects.


Headaches, dizziness and light-headedness are commonly reported side effects of Lisinopril. Confusion is very rarely caused by this medication.


Diarrhoea and vomiting are common side effects of Lisinopril.


It is uncommon to experience chest pain while taking this medication, but it is a slight possibility. It is also possible that sudden extreme low blood pressure could occur as a result of this medication, though this is very rare.


It is possible that the skin may become itchy or produce a rash as a result of this medication.

Lisinopril side effects

Click on the relevant area of the body to find out about how it may be affected by Lisinopril

Common side effects

Most side effects of Lisinopril are quite rare, but there are a few symptoms that commonly occur in patients taking the medication. These common side effects usually occur in fewer than one in every ten patients.

Uncommon side effects

Uncommon side effects of Lisinopril will affect fewer than one person in every 100 who take the medication. They will usually be mild and last only a few days, however if any of the symptoms persist or become more serious you should contact your doctor.

Rare side effects

Less than one in every 1,000 people will experience the rare side effects associated with Lisinopril. Be sure to contact your doctor if you experience these symptoms as you may need to alter your treatment.

Low blood pressure
Chest pain
Itchy skin
Skin rash
Dry mouth
Hair loss
Breast enlargement (in men)

Extremely rare side effects

Less than one in every 10,000 people will experience some of these extremely rare side effects. If any of these persist you should contact a doctor as soon as possible. These side effects include:

  • Low blood sugar level
  • Passing less urine than usual
  • Severe difficulty breathing
  • Wheezing or tightness of the chest

Severe side effects

These side effects are classified as rare because they only affect one patient out of every 1,000 who take the medication. If you notice any of these side effects you should contact your doctor immediately.

  • Pancreatitis (severe stomach or back pain)
  • Blood disorders (easy bruising, abnormal bleeding)
  • Liver problems (high temperature, yellowing of the skin or eyes)

Other side effects

There are certain side effects that have been reported but the frequency of their occurrence has not been established. The most notable of these side effects are depression and fainting although they are unlikely to occur in the majority of patients.

The medication is also known to on occasion affect the results of some blood test you will need to undergo. It can sometimes increase potassium and sodium levels as well as liver enzymes.

Allergic reactions

If you suffer from an allergic reaction to the medication you should stop taking the medication and go to a hospital straight away. Symptoms of an allergic reaction include:

  • Swelling of the face, throat or mouth
  • Sever skin rash and itchiness
  • Blistering of the skin
  • High temperature
  • Swollen glands

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