"Organic arsenic" refers to a form of arsenic that is found in nature and is less harmful to living organisms compared to its inorganic form. Full definition
Our body has specific chemical pathways that reduce the toxicity of organic arsenic compounds. (nutritionfacts.org)
It is worth mentioning that most foods will always contain some amount of organic arsenic, but that's not what causes serious issues. (newkidscenter.com)
First, Inorganic arsenic compounds have completely different chemical structures than organic arsenic compounds. (nutritionfacts.org)