There was one study done on animals a while back (maybe a decade or so) that cautioned about ALA and thyroid medications. Seems the rabbits (I think it was rabbits) could not convert T4 well to T3 when given high dose ALA. But that study has never been replicated or expanded or tested out in humans.
Rodent studies are only at best 60% applicable to humans. Their physiology is quite different from ours, and their dietary requirements very different also.
This was the paper... note the date... I read at another site at one point that the animals were rabbits...but I might be mistaken.
This paper is from 1991... and I'd expect someone would have tried to replicate, or prove it valid since then:
http://www.ncbi.nlm.nih.gov/pubmed/1815532
Lipoic acid didn't affect my thyroid supplementation at all. That is only my experience.
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Weezie looking at petunias 8.25.2017
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