Sodium, potassium, magnesium, chloride. Sea water, low-sodium sea mineral concentrate*, purified water, potassium chloride.
*A complete list of minerals and trace minerals present:
Antimony, Barium, Beryllium, Bismuth, Boron, Bromine, Cadmium, Calcium, Carbonate, Cerium, Cesium, Chloride, Chromium, Cobalt, Copper, Dysprosium, Erbium, Europium, Gadolinium, Gallium, Germanium, Gold, Hafnium, Holmium, Indium, Iodine, Iridium, Iron, Lanthanum, Lead, Lithium, Lutetium, Magnesium, Manganese, Molybdenum, Neodymium, Nickel, Niobium, Osmium, Palladium, Phosphorus, Platinum, Potassium, Praseodymium, Rhenium, Rhodium, Rubidium, Ruthenium, Samarium, Scandium, Selenium, Silicon, Silver, Sodium, Strontium, Sulfate/Sulfur, Tantalum, Tellurium, Terbium ,Thallium, Thorium, Thulium, Tin, Titanium, Tungsten, Vanadium, Ytterbium, Yttrium, Zinc, Zirconium, plus other naturally occurring trace minerals found in seawater.