Dr. Hartman,
I have not used topical EDTA, primarily because I didn’t see any significant findings with transdermal DMPS from many years back. I followed that protocol of transdermal DMPS for 2 years with disappointing results. Therefore, when the transdermal DMSA and EDTA came out I just used other things, i.e. oral DMSA instead. Because of the sensitive nature of spectrum kids I have kept transdermal chelators on my list of possibilities for special circumstances, i.e. kids how absolutely cannot take things in any other forms, but I haven’t found that I have needed to use them to any significant degree.
Glutathione could also be viewed on that list too. I always preferred intravenous glutathione, but not practical for many families. Oral capsules just seem to spike yeast problems. I like the liposomal glutathione, but hard in some kids with oral texture issues or taste issues. Therefore, the transdermal glutathione is the next best thing.
Bioavailabilty data on transdermal glutatione I haven’t researched in quite some time, so at this point it is more clinical experience.
Overall, my preference though for the kids is liposomal if it can be done.
Dr. Woeller