Launched in April, the PiriNatural spray can help reduce nasal congestion caused by allergies by cleaning and washing the nasal cavities with isotonic seawater and aloe vera, the manufacturer said.
PiriNatural can be used daily, as many times as needed, to ease congestion and is suitable for anyone over the age of two.
GSK will promote the product through a £3 million advertising campaign throughout June and July.
One 100ml PiriNatural bottle retails at £8.69.
To order, call 0800 783 8881