The best electrolyte powder that I have seen is Dr Berg's.  It has 1 gram of potassium, and 120mg of magnesium. Not much sodium but you can just add .your own himilayan. Put in a drop of lugols and you have a really good drink.
 
	LMNT has 1 gram of sodium, 200mg Potassium, and 60mg magnesium.  That potasssium amount is bascially negligible.  The product is just not a good value as its basically just saltwater.