Before taking ANY supplement, speak to a doctor. Do not rely on "research" done on Google University. The internet is filled with misinformation published by people with an agenda and a lack of basic scientific knowledge.
Do not rely on the presentations of someone whose goal is to sell you things. While Lessman is a likeable guy, and he seems to be informatve, he ultimately wants you to buy things.
I do like Lessman's supplements beause they are powdered and do not cause stomach upset. I think the quality is good, but ultimately, I only take what my doctors think I should take (his multivitamin and Coenzyme Q 10) because, in many cases, the thing taking so many supplements does is produce expensive urine.