Hi Dawn, according to Andy, you take at the very least the basic supplements he recommends - the vitamin C, vitamin E, milk thistle, magnesium, zinc and B complex. All (apart from zinc) must be taken 3 - 4 times per day due to their pharmaceuticals. You take them daily, during DMSA and otherwise.

Not sure about algin, Andy doesn't mention that, but if it helps, I can't see it interferring if you want to add it.

Apparently, DMSA causes mercury to be excreted via the urine.

Yes, psyllium husks are fine to take if you need them. Probably wise to drink more water during DMSA chelation due to helping flush the metals out.

Hope that helps.