Aqua Maris Strong Nasal Spray is hypertonic seawater which has soothing effect on the mucus membranes of the upper respiratory tract. Because of its salt contents, Aqua Maris® Strong purified seawater removes excess fluid from the nasal mucous membranes, thereby decreasing its swelling and making breathing easier. As Aqua Maris® Strong supports the physiological condition of the mucous membrane and does not have any systemic effects it can also be safely used by children, as well as by pregnant and breast-feeding women and elderly people.