Studies using TDCS for neuroscience research in human subjects are relatively common and current research suggests TDCS is safe. The long-term effects of TDCS a

Studies using TDCS for neuroscience research in human subjects are relatively common and current research suggests TDCS is safe. The long-term effects of TDCS are somewhat less well-known, although there are several studies of TDCS for depression that suggest that it is effective and well-tolerated. OTOH, manufacture of TDCS devices for non-clinical purposes is unregulated AFAIK, and a poorly designed device could deliver more current than it claims to.