hydrasense medium stream 210ml bayer inc. hydrasense medium stream benefits: - clinically proven to help reduce and relieve nasal cold symptoms such as nasal obstruction and secretion, and related sinus pressure - 100% natural-source seawater - facilitates better breathing - cleanses excessive mucus accumulation caused by colds, allergies and upper respiratory tract infections - non-medicated solution without chemical additives - suitable for regular or frequent use without rebound effects when used as directed. ingredients: 100% natural-source, undiluted seawater equivalent to 9 g/l (0.9%) sodium chloride and a combination of more than 70 marine trace elements.