Lisinopril for high blood pressure

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Lisinopril for high blood pressure

This leaflet is about the use of lisinopril for high blood pressure (this is also called hypertension).

Information-Standard-logoThis leaflet has been written for parents and carers about how to use this medicine in children. Our information sometimes differs from that provided by the manufacturers, because their information is usually aimed at adult patients. Please read this leaflet carefully. Keep it somewhere safe so that you can read it again.

Name of drug


Brand names: Zestril®

Why is it important for my child to take this medicine?

High blood pressure can cause damage to internal organs. Lisinopril is one of a group of medicines called ACE inhibitors which help to lower blood pressure.

What is lisinopril available as?

  • Tablets: 2.5 mg, 5 mg, 10 mg, 20 mg 
  • Liquid medicine can be ordered specially by your pharmacist

When should I give lisinopril ?

Lisinopril is usually given once each day. This is usually in the morning.Give the medicine at about the same time each day so that this becomes part of your child's daily routine, which will help you to remember.

How much should I give?

Your doctor will work out the amount of lisinopril (the dose) that is right for your child. The dose will be shown on the medicine label.

You will probably give your child a low dose to start with, then increase it gradually. Your doctor will explain what to do. 

It is important that you follow your doctor’s instructions about how much to give.

How should I give it?

Tablets-imageTablets should be swallowed with a glass of water, milk or juice. Your child should not chew the tablet. You can crush the tablet and mix it with a small amount of soft food such as yogurt, honey or jam. Make sure your child swallows it straight away, without chewing.
Liquid-medicine-imageLiquid medicine: Measure out the right amount using a medicine spoon or oral syringe. You can get these from your pharmacist. Do not use a kitchen teaspoon as it will not give the right amount.

When should the medicine start working?

Your child’s blood pressure will start to come down after a few days. Normally you will not see any difference in your child, but occasionally there can be a large fall in their blood pressure.

What if my child is sick (vomits)?

  • If your child is sick less than 30 minutes after having a dose of lisinopril, give them the same dose again.
  • If your child is sick more than 30 minutes after having a dose of lisinopril, you do not need to give them another dose. Wait until the next normal dose.

If your child is sick again, seek advice from your GP, pharmacist or hospital. They will decide what to do based on your child’s condition and the specific medicine involved.

What if I forget to give it?

Give the missed dose when you remember during the day, as long as this is at least 12 hours before the next dose of lisinopril is due.

Never give a double dose of lisinopril.

What if I give too much?

It may be dangerous to give too much lisinopril because it may make your child’s blood pressure too low.

If you think you may have given your child too much lisinopril, contact your doctor as they may want to check your child’s blood pressure.

If your child feels faint or dizzy, cold and sweaty, or has a weak or rapid heart rate (they may feel as though their heart is racing or fluttering), or they begin to breathe quickly, contact your doctor or take your child to hospital straight away. Take the medicine container or packet with you, even if it is empty, as this will be useful to the doctor.

Are there any possible side-effects?

We use medicines to make our children better, but sometimes they have other effects that we don’t want (side-effects).

Side effects you must do something about

If your child’s face, lips or tongue start to swell, or they develop a rash, take your child to hospital or call an ambulance straight away, as your child may be developing angioedema, which needs to be treated.

Other side-effects you need to know about
  • Your child may feel dizzy or light-headed when they stand up, or may faint. Encourage them to stand up slowly, and to sit or lie down if they feel dizzy or light-headed. If this happens often, contact your doctor to check your child’s blood pressure, as it may be too low.
  • Your child may feel sick or be sick (vomit) or get diarrhoea when they first start taking lisinopril. Giving the medicine with some food may help. If this is still a problem after a week, contact your doctor for advice.
  • Your child may develop a dry cough that doesn’t go away. If it becomes a problem, contact your doctor for advice, but continue to give lisinopril.
  • Occasionally, lisinopril can cause problems with how your child’s kidneys work. If your child stops passing urine (doing a wee) contact your doctor straight away as there may be a problem with their kidneys.

There may, sometimes, be other side-effects that are not listed above. If you notice anything unusual and are concerned, contact your doctor. You can report any suspected side-effects to a UK safety scheme at http://www.mhra.gov.uk/yellowcard.

Can other medicines be given at the same time as lisinopril? 

  • You can give your child medicines that contain paracetamol, unless your doctor has told you not to.Ask your doctor if ibuprofen is safe before giving it.
  • Lisinopril should not be taken with some medicines that you get on prescription. Tell your doctor and pharmacist about any other medicines that your child is taking before starting lisinopril.
  • Check with your doctor or pharmacist before giving any other medicines to your child. This includes herbal or complementary medicines.

Is there anything else I need to know about this medicine?

  • Treatment with lisinopril may start in hospital, so that its effects on your child can be monitored carefully and the right dose worked out. 
  • Your doctor will do blood tests to check your child’s kidney function, as this is sometimes affected by lisinopril. 
  • Your doctor will check your child’s blood pressure regularly.

General advice about medicines

  • Try to give medicines at about the same times each day, to help you remember.
  • Only give this medicine to your child. Never give it to anyone else, even if their condition appears to be the same, as this could do harm. 

If you think someone else may have taken the medicine by accident, contact your doctor straight away.

  • Make sure that you always have enough medicine. Order a new prescription at least 2 weeks before you will run out.
  • Make sure that the medicine you have at home has not reached the ‘best before’ or ‘use by’ date on the packaging. Give old medicines to your pharmacist to dispose of.

Where should I keep this medicine? 

  • Keep the medicine in a cupboard, away from heat and direct sunlight. 
  • Make sure that children cannot see or reach the medicine.
  • Keep the medicine in the container it came in.

Who to contact for more information 

Your child’s doctor, pharmacist or nurse will be able to give you more information about lisinopril and about other medicines used to treat high blood pressure.

You can also get useful information from: 
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