The three things in low carbing that people get deficient in is potassium, calcium and magnesium because of all the water loss. They are all interdependent with each other as well. Being deficient in potassium causes leg cramps and tiredness, deficiency in calcium can cause muscle spasms and deficiency in magnesium can cause constipation. Try supplementing magnesium daily to help get you regular again. 250 mg to 500 mg(one or two small pills) should be plenty. I personally haven't had success with fiber and ever since I started taking 250 mg of magnesium a day I haven't had a single problem.

Good Luck!!

Julie Huck
318/257.4/160