Bests & Worsts Reviews from Amazon

Elemental potassium is not a nice thing to have in your hands. It is in the same chemical family as lithium and sodium, so it is very reactive. Our bodies do need it, however, so we have to consume it in a compound, say potassium gluconate, if we don't get enough from our diet. It doesn't surprise me that 460 mg of the 550 mg of potassium gluconate is really the gluconate. When you consider that every potassium gluconate molecule contains 6 carbon atoms, 7 oxygen atoms, and 11 hydrogen atoms for every potassium atom, the disparity is apparent. In fact, it would be very difficult to find a 550-mg potassium gluconate tablet that had substantially more than 90 mg of elemental potassium. The effect of the potassium gluconate dosage, even at 550 mg, is not trivial. If you have nighttime leg cramps, take your 550-mg tablet half an hour before bedtime and you'll have fewer cramps. I have been supplementing my diet with potassium gluconate for years, and if I miss a dose my legs let me know (painfully) that very night. The Nature Made stuff works just fine for me. So does every other brand I have tried.