Be sure you get the type of salt with iodine. Most diets are deficient in that nutrient. Store in a dry place or the salt will form a solid cake. Wal-Mart sells a brand of Sea Salt which has lower sodium with iodine in it.
If it's salt, it can't be "lower sodium". Salt is NaCl, Sodium Chloride. What they're selling must be a salt substitute or blend of salt and substitute.
Not necessarilyy... "Most medical advi(c)e now states that iodine in salt is no longer necessary due to our food sources arising from all over the world".
Also, just a technicality: ALL salt is SEA salt.