Lipo-B (MIC + B12)

Each component has a defined role in one-carbon and lipid metabolism. Methionine is an essential sulfur amino acid and the precursor of S-adenosylmethionine, the cell's principal methyl donor. Choline is a quaternary ammonium compound required for phosphatidylcholine synthesis, which in turn is needed for hepatic export of triglycerides in very-low-density lipoproteins; choline deficiency is the classic experimental route to hepatic steatosis in rodent models. Inositol is a carbocyclic sugar that forms the backbone of phosphatidylinositol and its phosphorylated signaling derivatives. Cyanocobalamin serves as the cofactor precursor for methionine synthase and methylmalonyl-CoA mutase, linking B12 status directly to methylation capacity and to propionate metabolism.

Cyanocobalamin is a deliberate choice of B12 form rather than an arbitrary one. It is the most stable of the cobalamins and the least readily degraded, but it is not itself a cofactor: cells must remove the cyano group and convert it to methylcobalamin or adenosylcobalamin before methionine synthase or methylmalonyl-CoA mutase can use it. Where that conversion step is itself the variable under study, the methylcobalamin listing in this catalogue is the better comparator. The term lipotropic dates to mid-twentieth-century nutritional work on agents that altered hepatic fat accumulation, which is the context the three-component base comes from. Two fill sizes are offered, 10 mL and 30 mL of one solution, kept cold and dark because the cobalamin that gives it its colour photodegrades.

This is a pre-mixed presentation: the strength is fixed at fill, and the only arithmetic between the label and the bench is a change of units. The peptide unit converter moves between mg, mcg, mL and µL without the decimal-point slip that costs a whole run.