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Taking propranolol for haemangiomas

What are the main side effects of propranolol?


This means low blood sugar levels. The younger a child is the more important it is for them to have a regular intake of sugar.

If your child is being sick, then a drink such as dioralyte can be used as this contains sugar and salt. If your child is able to drink this then it is unlikely that they are at risk of developing low sugar levels but if you are concerned you should seek medical advice.

For babies this means their milk feed, and is the reason why you should ask for medical advice if your baby is unwell and not feeding properly whilst taking this medication.

The most important thing is the regular intake of food or drink that contains sugar in some form and if this supply is stopped then you should ask for advice.

Low heart rate

This medicine has an effect on the heart making it beat slightly slower. This is fine if your child is well.

However in unwell children, especially under 2 years of age, the way they respond to being unwell is to increase their heart rate. If they are taking this medication then they are less able to do this. If your child is unwell you need to ask for medical advice.


In children who wheeze or have asthma, this medicine can make it worse. Make sure the team at Sheffield Children’s hospital know about this. If you are concerned seek medical advice.

Dosage of propranolol

It is important that every time you get a new bottle of propranolol that you check the strength on the front of the bottle.

At the Children’s Hospital Pharmacy you will be given a bottle of 5mg per 5ml of propranolol.

This means that each ml of liquid contains 1 mg of propranolol. We only supply Propranalol to you from Sheffield Children’s Hospital pharmacy, except in exceptional circumstances. We would then arrange this separately if appropriate.


Please do not give your child any teething gels containing Lignocaine whilst on Propranalol. if you are not sure, check with your pharmacist.

Contact us

Dermatology secretary
0114 226 7870 – Monday to Friday, 9 am to 5 pm

Dermatology specialist nurse
0114 226 7850 – Monday to Friday, 9 am to 5 pm

Paediatric registrar on call
0114 271 7000 – out of hours or weekends

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Please note: this is a generic information sheet relating to care at Sheffield Children’s NHS FT. These details may not reflect treatment at other hospitals. This information is not intended as a substitute for professional medical care. Always follow your healthcare professionals’ instructions. If this resource relates to medicines, please read it alongside the medicine manufacturer’s patient information leaflet. If this information has been translated into another language from English, efforts have been made to maintain accuracy, but there may still be some translation errors. If you are unsure about any of the guidance in this resource or have specific questions about how it relates to your child, always ask your healthcare professional for further advice.

Resource number: DM10

Resource Type: Article

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