Kirkman Labs do ALA in 25mg capsules. http://www.kirkmanlabs.com/

And even this is too a high dose to start for some people. I will be starting at or below 6mg. I think it can work very well in clearing brain fog, but if you take too high a dose it can lead to big detox symptoms.

If you are following Andy's schedule, you should be taking ALA every 3-4 hours to avoid redistribution. His protocol is discussed on this forum.

http://health.groups.yahoo.com/group/frequent-dose-chelation/messages

Hope this helps.
Nicola