Bests & Worsts Reviews from Amazon

I added a low dose of this MSM to my protein shakes for several months. I figured it couldn't hurt... it's just dietary sulfur, right? Wrong. I took the Spectracell blood panel, which came back deficient in Zinc and Selenium (despite supplementing both). It turns out, sulfur disrupts absorption of zinc and selenium (google search "mineral wheels" to see the various mineral interactions). As a farmer, I already knew this happened in the soil, it just never occurred to me that the same would take place in our bodies... After stopping the MSM, I found that my mood improved (mood issues are associated with LOW zinc and with both LOW and EXCESS selenium). I'm just throwing this info out there, as a PSA for those taking MSM... get your Zinc and Selenium tested!