Mackenzies Smelling Salts are widely used in sports medicine and is a staple of most Physio\'s run on bags. Excellent at helping relieve congestion, catarrh and head colds, these strong and aromatic salts have a powerful aroma that helps to ease congestion and keep your airways feeling clear and refreshed. These smelling salts and quick and easy to use; simply inhale Mackenzies through the nostrils for instant results. Use with caution if a player is injured as may cause a sudden movement of a players head.