Nature s Answer to Breathing Easier Contains: Complete Nasal inhaler with 90 day replaceable salt cartridge & vapor strip. 100% Natural. Drug free. Safe & effective Deep penetrating crystals provide drug free relief of: Chest congestion. Allergy discomforts. History of Dry Salt Therapy Since ancient times, rock salt has been used to ease the symptoms of respiratory ailments such as asthma, allergies, bronchitis, sinusitis and other respiratory disease.