It is better to get potassium from food. This is because the potassium is bound up in the food, and released slowly thru the GI tract, thus avoiding elevated levels.

Supplements are fast dissolving and dump the potassium all at once.

Patients given potassium in supplement forms in the hospital or long term care, often go too high and then need a binding resin to remove it. Using supplements therefore is rather tricky, even for doctors. So try to get your potassium from food, as nature intends.

Also check your food and avoid MSG (monosodium glutamate)... this will set off your NMDA pain receptors and make for major discomfort. This is a very common food additive, and in most soups, sauces and restaurant items. All the flavored chips and snacks are filled with high levels of MSG. It has alternate names too, to fool you. This chemical floods receptors too. (foods with natural glutamate (example parmesan cheese) in them, are slowly absorbed.)