If your child is taking antihistamine medicine (e.g. Piriton©, Zitek© or Clarityn©), they will need to stop taking it before they come to the appointment as it may interfere with the results of the test.
Your child should stop taking short-acting antihistamines, such as Chlorphenamine (also known as Piriton©) two days before the test.
Your child should stop taking long-acting antihistamines, such as Cetirizine and Loratidine (also known as Zirtek© and Clarityn©) five days before the test.
Some cough and cold or travel sickness medicines contain antihistamines. If you are unsure whether you can give these to your child before they come to the test, speak to your pharmacist or phone our specialist nurses on 020 7188 9783.
Your child does not need to stop taking any other medications (such as asthma inhalers or nasal sprays) before they come, but please bring a list of any medicines your child takes with you to the test.
Please let the nursing team know if your child has needed to use their reliever (blue) inhaler. We may not be able to go ahead with the test however the nurses will discuss this with you and can then decide if it is safe for your child to continue with the test.