<p>No serious side effects have been reported. Occasional irritation of the nasal mucosa may occur during the first day of use. In rare cases with Sodium Cromoglicate solutions alone wheezing and tightness of the chest has been reported. Because a lower dose of Xylometazoline is employed in this preparation it causes mild side effects such as nasal irritation, dryness of the nose, sneezing, headache, insomnia, drowsiness and palpitations.</p>