The UK is in the midst of hay fever season, with many sufferers turning to nasal sprays to ease their symptoms. However, a warning has been issued to users of certain sprays with authorities urging people not to use them for more than five days in a row.
According to the Medicines and Healthcare products Regulatory Agency, there have been reports of worsening nasal congestion when the effects of sprays containing xylometazoline hydrochloride and oxymetazoline hydrochloride wear off. A number of popular brands, including Vicks Sinex and Sudafed, sell nasal sprays that contain these nasal decongestants. The agency warns that exceeding the five day usage limit can increase the risk of side effects.
They said: “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, referred to hereafter as ‘xylometazoline’ and ‘oxymetazoline’, 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. Medical advice should be sought if symptoms of nasal congestion persist, worsen or do not improve after 5 days, as alternative treatment may be required.”
Hay fever affects around one in four adults in the UK, with the season typically running from late March until September. Symptoms include a blocked nose, sneezing, itchy eyes and tiredness.
Many sufferers use nasal sprays and drops containing xylometazoline and oxymetazoline to clear their blocked nose. They can be bought in shops and pharmacies without needing a prescription.
However, the Medicines and Healthcare products Regulatory Agency advises: “Only use these medicines for a short time and to help with your symptoms.” They added: “Do not use these medicines for more than 5 consecutive days.
“If you use these medicines for longer than the recommended duration, your nose may become blocked again, and you may get other problems such as runny nose, sneezing, itching and irritation on the inside of the nose or your body can stop responding to the medicine.”