Here's some info on optimal Vit D levels:
articles.mercola.com/sites/articles/archive/2011/11/21/how-to-get-your-vitamin-d-to-healthy-ranges.aspxSince Lyme is considered the infectious disease equivalent of cancer, your level of 93 fits right within the range recommended in the link.
You may be familiar with Dr. Burrascano, one of the ILADS co-founders. He included supplement recommendations in the guidelines he wrote in 2008. You'll see on page 31 here:
www.ilads.org/lyme/B_guidelines_12_17_08.pdfthat he recommends 175mg milk thistle daily (and to use an 80% Silymarin extract)
Buhner recommends much higher doses for coinfection treatment.
I take 150mg milk thistle caps (80% Silymarin extract) 2x daily