Vicks Sinex is a brand of topical nasal decongestant spray produced by Vicks, a division of Procter & Gamble. The active ingredient contained in the Sinex nasal spray is Oxymetazoline which acts to relieve blocked nasal passages. The recommended dosage is 2–3 sprays in each nostril every 10–12 hours, though users should check the packaging for the specific product purchased. Excessive use of this product could lead to a dependency on it whereby the nasal passages block without use of Oxymetazoline again. Thus it is recommended that Sinex not be used for more than three days. Extra ingredients include camphor, eucalyptol, and menthol, which give Sinex Nasal Spray products the characteristic aroma of Vicks products but could also cause irritation of the mucous membrane.
The company was founded by Sir Mark Weinberg, Lord Joffe and Sir Sydney Lipworth after Abbey Life was taken over, with seed finance from Hambros Bank, and set up its headquarters in Swindon town centre in 1970 under the name ‘Hambro Life Assurance’. It was first listed on the London Stock Exchange in 1975. The company expanded its financial adviser operations during the late ’70s and early ’80s, acquiring the Allied Unit Trusts of which it was soon the major unit holder, to become ‘Allied Hambro’ in 1984. The company became ‘Allied Dunbar’ in 1985 after it purchased Dunbar & Co., a small private bank, following the acquisition by BAT Industries. The asset management department was hived off to form Threadneedle Investments, and it was bought out by Zurich Financial Services in 1998.
Info gleaned from Wikipedia