If my disease is active, I use this:
www.amazon.com/Ancient-Minerals-Magnesium-Oil-oz/dp/B001AD0HL8Magnesium oil doesn't cause loose bowels and it increases cellular magnesium much more than oral magnesium. It acts much faster too. Oddly, I find that oral magnesium is more effective for my migraines than transdermal magnesium.