In my very humble opinion, the Marshall Protocol should only be considered if one has a high Vitamin D 1,25 blood level (this is not the same as the Vitamin D 25 level), as this is where it is designed to work best. The Marshall Protocol addresses an issue with Vitamin D processing/metabolism that not everyone with Lyme/coinfections has in my opinion (based on reading how the Marshall Protocol works).
I'm not against the MP, I just want people to be careful that they consider all sides of the issue before jumping into it. Take care,