Antihistamine tablets are generally well-tolerated but they can cause drowsiness in some patients. To reduce any potential effects of this, take this medication at night.
If you do experience drowsiness, do not drive or operate machinery- it is not safe!
Other potential side effects include dizziness, nausea and headache.
Side effects of steroid nasal sprays are usually localised and include nose bleeds, irritation/ soreness in the nostrils or throat, headaches and an unpleasant taste in your mouth.
Please note, the combination nasal sprays (steroid & antihistamine)  may have some influence on your ability to drive and operate heavy machinery. This effect can be enhanced by alcohol. Be careful until you are aware of how this medication affects you.
For full details of the potential side effects of these treatments, please ensure that you read the patient information leaflet that comes with your medication before you start to use it.
If you are concerned that you are developing side effects, we advise that you stop your medication and seek medical advice.