Some of them are incompatible with each other and will precipitate which will clog your column
B12 injections no weight-loss edge Studies comparing injected vs oral B12 during calorie-restricted diets found no difference in objective weight or body-composition outcomes, though the injection group sometimes reported more subjective energy
Plant Physiol 121:879888 Matamoros MA, Dalton DA, Clemente MR, Rubio MC, Ramos J, Becana M (2003) Biochemistry and molecular biology of antioxidants in the rhizobia-legume symbiosis
Possible side effects include injection-site reactions, temporary skin irritation from topical use, and in rare cases, the "copper uglies" phenomenon
Lee et al., 2009
An economical method for cell-free protein synthesis using glucose and nucleoside monophosphates