Nasal decongestant sprays and drops containing xylometazoline hydrochloride/ oxymetazoline hydrochloride
Published: 1 May 2026
There have been reports of worsening nasal congestion (rebound congestion) when the effects of nasal decongestant sprays or drops containing xylometazoline hydrochloride and oxymetazoline hydrochloride wear off. This typically occurs when these medicines are used for longer than recommended. Continued use can also lead to more serious and longer-lasting changes to the lining and structures of the nose (rhinitis medicamentosa). In addition, repeated use will result in a rapid and noticeable reduction in the medicine’s effectiveness (tachyphylaxis).
Patients and caregivers should be informed not to exceed the recommended dose and not to use for more than 5 consecutive days. Continuous use of these medicines for more than 5 days can lead to an increased risk of side effects.
Further information and advice for healthcare professionals can be found on the MHRA website.