Does Hydroxo B12 contain GMO ingredients? Amber Larsen September 27, 2016 21:57 Follow No, test results verify that there are no genetically modified ingredients in this product. Related articles Does Hydroxo B12 contain corn or grain-derived ingredients? Is Hydroxo B12 soy-free? What is the difference between the vitamin B12 forms methylcobalamin, adenosylcobalamin, hydroxocobalamin and cyanocobalamin? Is Hydroxo B12 suitable for vegans and vegetarians? If not, why? Is Hydroxo B12 gluten-free? Comments 0 comments Article is closed for comments.