It's a nickname, not a brand
B12 shots for malabsorption or dietary restriction Vegans, vegetarians, older adults, and people with GI conditions (Crohn's disease, celiac disease, pernicious anemia) commonly have inadequate B12 absorption

Macromolecule Content Total Structure Weight: 24.19 kDa Atom Count: 1,657 Modeled Residue Count: 185 Deposited Residue Count: 208 Unique protein chains: 1 Experimental Data Method: X-RAY DIFFRACTION Resolution: 2.10 R-Value Free: 0.205 (Depositor), 0.208 (DCC) R-Value Work: 0.156 (Depositor), 0.165 (DCC) R-Value Observed: 0.158 (Depositor) Unit Cell : Software Package: Deposition Data Released Date: 2006-07-25 Deposition Author(s): Johansson, C., Kavanagh, K.L., Rojkova, A., Gileadi, O., von Delft, F., Arrowsmith, C., Weigelt, J., Sundstrom, M., Edwards, A., Oppermann, U., Structural Genomics Consortium (SGC) Revision History (Full details and data files) Version 1.0: 2006-07-25 Type: Initial release Version 1.1: 2008-05-01 Changes: Version format compliance Version 1.2: 2011-07-13 Changes: Advisory, Derived calculations, Version format compliance Version 1.3: 2018-01-31 Changes: Structure summary Version 1.4: 2021-10-20 Changes: Database references, Derived calculations Version 1.5: 2023-08-30 Changes: Data collection, Refinement description

10.1006/phrs.2000.0806 14
The Immunity Supplements collection can be helpful if your routine also includes broader immune support