I have had the same problem when on Atkins. For years. So I take a capsule of psyllium every day. I started with 1 in AM & 1 in PM for a couple of days, then 1 in the morning was enough to keep things comfortable.

I prefer the capsules which I get at GNC or a health food store because they are easy to swallow. And they DO work.

This is just as normal as constipation. Whenever I decide to eat wheat in some form, the problem goes away, until I go back to LCing.