Wary? I’m not selling anything. It’s Vitamin B1 and Magnesium: cheap, harmless, and gave me noticeable fluidity through some of my blocks. Studies have shown that 1/3rd of stutterers who supplement with those two have marked improvement in speech. When I try and help others like me, I mention every single thing that helped. I’d be more wary of people who don’t know what they are talking about.