Why is it important for my child to take this medicine?
Mometasone is a steroid medicine. It reduces inflammation in the lungs that can act as a trigger for an asthma attack, and so should reduce the number of attacks. Mometasone is commonly called a ‘preventer’ medicine. It is important that your child takes it regularly to help prevent asthma attacks.
Mometasone will not reduce wheezing or breathlessness during an acute asthma attack – your child should use their ‘reliever’ inhaler for this (this is often a blue salbutamol inhaler).
What is mometasone available as? Mometasone has to be inhaled into the lungs (breathed in). A special device called a twisthaler is used and consists of a plastic device containing dry powdered medicine. This is used in older children aged 12–18 years. Different sizes are available, which give 200 or 400 micrograms of mometasone per metered inhalation (puff).
How much should I give?
Your doctor will work out the amount of mometasone (the dose) that is right for your child. The dose will be shown on the medicine label.
Your doctor may suggest that your child has a low dose to start with. They may then increase the dose (by increasing the number of puffs you give, or using an inhaler that gives a higher dose) as your child gets used to the medicine and depending on how your child responds to it.
What if I give too much? You are unlikely to do harm if you give an extra dose of mometasone by mistake. If you are concerned that you may have given too much, contact your doctor or local NHS services (111 in England and Scotland; 0845 4647 in Wales). Have the medicine or packaging with you if you telephone for advice.
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 is short of breath or is wheezing, or their face, lips or tongue start to swell, or they develop a rash, take them to hospital or call an ambulance straight away as they may be allergic to mometasone.
Other side-effects you need to know about :
If your child is taking a high dose of mometasone, they may develop a yeast infection in the mouth, called oral thrush. If you notice a thick white or cream-coloured covering on your child’s tongue, or the mouth is red and irritated, contact your doctor for advice, as this may need treatment. You can help prevent this by making sure that your child rinses their mouth with water after using mometasone.
If your child’s voice is hoarse or their throat is sore after using the twisthaler, encourage them to rinse out their mouth after every use.
Your child may develop a dry mouth with this medicine. Eating citrus fruits (e.g. oranges) or taking sips of water may help.
Mometasone may slow the speed at which your child grows at the start of treatment, but they will probably catch up when their asthma is properly controlled. Their final adult height should not be affected. Your doctor should monitor the growth of your child while they are receiving treatment with mometasone.
All steroid medicines, including mometasone, but only in high doses, may affect the adrenal glands so that they produce less of a hormone called cortisol when the body is stressed (e.g. during illness or injury). This means that your child may have more difficulty fighting off an infection, or may recover less quickly from injury or after surgery.
General advice about medicines :
Try to give medicines at about the same times each day, to help you remember.
If you are not sure a medicine is working, contact your doctor but continue to give the medicine as usual in the meantime. Do not give extra doses, as you may do harm.
Only give this medicine to your child. Never give it to anyone else, even if they have wheezing and breathlessness, 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 I should keep this medicine?
Keep the medicine in a cupboard, away from heat and direct sunlight. It does not need to be kept in the fridge.