I've never been a fanatic about supplements before this; all I can see to take is a daily multi without iron. My own feeling is that it's better for my body to try and get my daily minerals and such through diet rather than supplementation, but YMMV.

Since I'm on daily BP meds, potassium loss is an issue for me. Before Atkins I was drinking tomato juice every day and eating an extra banana once every 2-3 days, and was avoiding the potassium loss issues with that. I tried a potassium supplement before, and felt the yo-yo effect; the warm flushes in the morning as I got it all at once, and leg cramps at night after it wore off. I found that absorbing it through diet worked a lot better for me.