Taking NAC depends on how your body handles sulphur(thiol) and that too changes over time when you chelate and detox and your body adapts/changes.

“Some people's bodies respond to mercury by making more thiol
containing things like glutathione and cysteine. For these people
they need to REDUCE their intake of everything sulfury to keep
levels down.

Other people's bodies respond to mercury by having low levels of
glutathione etc. and they need to INCREASE their intake of sulfury
stuff. Andy Cutler http://onibasu.com/archives/am/2470.html ”

For your guidance that slow release DMSA is not approved of by Cutler and his gang over on Yahoo FDC because it does not slow release like the company says it does. Whereby you get redistribution events.

If you search Yahoo FDC more you will find many more discussions about this….but here is the first one I found http://health.groups.yahoo.com/group/frequent-dose-chelation/message/12517

But…………we are all different….each to their own….if it’s working….cool

Take care