A once-daily dose of Schering-Plough’s allergy drug, Nasonex (mometasone), is safe and effective for the treatment of nasal polyps and nasal congestion related to the condition, according to new research.

Patients currently take two doses of the drug to treat their nasal polyps – grape-like growths in the nasal cavity that can reduce airflow in the nasal passages, which lead to congestion and may ultimately need to be surgically removed. Data also showed that a single dose of Nasonex improved patients’ sense of smell and nasal secretion versus placebo.

Nasonex was originally approved in 1997 and won the US Food and Drug Administration nod in December 2004 for the treatment of nasal polyps in patients 18 years of age and older, having been given the green light from the European regulator a month earlier.