Organic salt has all the minerals of the ocean and the ocean has the same chemical and mineral properties of blood(at least what blood is suppose to have). Organic salt taken in proper proportions is very healing.
One great (and very long lived yogi) use to drink one table spoon of seawater everyday except for special Holy days and attributed great health to this process.
Modern medicine uses Saline IVs for treating people.
Put a salt block out for horses and they will take what they need without being told what to take, as we get closer to nature, humans can do the same again.