to salt. Dehydrated, pulverized salicornia (glasswort, marsh samphire) is sold under the brand name "Green Salt" as a salt substitute claimed to be as salty in taste as table salt, but with less sodium. Historical Historically (late 20th century), many substances containing magnesium and potassium have been tried as salt substitutes. They include: carnallite (KMgCl3•6H2O) kainite (KCl•MgSO4•2H2O) langbeinite (K2Mg2(SO4)2) sylvite (KCl) – currently used polyhalite (K2MgCa2(SO4)4•2H2O) Epsomite () kieserite () Even further back in the early 20th century, lithium chloride was used as a salt substitute for those with hypertension. Unfortunately, however, overdosing was common and deaths have occurred, leading to its prohibition in 1949. Additives Flavor enhancers, although not true salt alternatives, help reduce the use of salt by enhancing the savory flavor. Hydrolyzed protein or 5'-nucleotides are sometimes added to potassium chloride to improve the flavour of salt substitutes. Salt substitutes can also be further enriched with the essential nutrients. A salt substitute can, analogously to the problem of iodine deficiency, help to eliminate the "hidden hunger" i.e. insufficient supply of necessary micronutrients such as iron. Such substances are promoted by UNICEF as a "super-salt". See also Sugar substitute Milk substitute References Edible salt Potassium compounds Imitation foods