Muscle Maxx Testo Boost Research at Boston University School of Medicine found that "around 21 percent of 193 ayurvedic normal improvements [...] contained lead, mercury or arsenic," and included shilajit on the once-over of corrupted fixings. Notwithstanding the way that Sergeant Steel records its shilajit is "cleansed," it doesn't offer any pariah testing to avow paying little respect to whether their shilajit contains overpowering metals, consequently we cut it.