"Pass"
For what it is worth........
I'm doing Atkins and also take 130mg of Oxycontin daily for my chronic joint arthritis

pain.
Believe me, I know what constipation is.

I was talking to the Pharmacist the other day and had tried Senikot but the associated intestinal pains were incredible. Senikot is going to MAKE YOU GO no matter what is blocked up in front of it.
He suggested something called MiraLAX. You have to take it once a day for a week or so to get balanced out. It is completely neutral regarding flavor. I put it in iced tea and noticed no taste.
It will store about 1.5% to 2% water weight in your system to soften and relieve the constipation.
When I used it, I plateaued and even gained about 2# that week.
The move to regularity was great and the additional weight you see is only water in the system. But that is how it works.
I stopped taking it and the constipation returned as expected.
I stopped to see if the MiraLAX was causing the water retention and sure enough is was. The next week I dropped the 6# I was stalled with.
Again, if you don't mind the "temporary" plateau, it is great stuff.