> >>A lot of people starting a low-carb plan lose potassium and, if memory
 > >>serves, another micronutrient or two due to frequent urination.

"Once this period of "feeling fabulous" is established, some people lapse
into feeling exhausted and their legs sometimes ache.  This is caused by
hypokalemia or low blood potassium.  Because a low-carb diet has such a
diuretic effect on the kidneys, it often gets rid of enough potassium along
with the excess fluid that some people become potassium deficient.   Low
potassium can cause all kinds of different symptoms such as tingling,
light-headedness, fatigue, muscle aches, and especially deep muscle fatigue
and cramps."

source: Protein Power

The Eades recommend using Morton's Lite Salt or NoSalt because these are
pure potassium salts and usually will compensate for the potassium lost
through the kidneys.  Potassium supplements are also available in 99 mg
capsules.

Rob