In a few countries, like Japan and Malaysia, you can buy B12 shots over the counter, even in supermarkets
Equipment Needed for Reconstitution You only need a few simple tools for this mixing process at home
Self-administered B12 shots are generally recommended for individuals: whose bloodwork has documented low B12 levels Patients with pernicious anemia or a lack of intrinsic factor Individuals with Crohn's disease, celiac disease, or post-bariatric surgery malabsorption Vegans and strict vegetarians are unable to correct the deficiency through diet Older adults whose stomach acid production has declined with age Anyone on long-term metformin or proton pump inhibitors Across most of the U.S., injectable B12 is not sold over the counter a clinician has to write the script before a pharmacy can dispense it
GHK-Cu also has strong topical relevance in peptide and cosmetic research, although published work notes that skin absorption can be limited without delivery support
A 2021 study on regenerative peptides found that combinations exhibited synergistic changes in gene expression compared to individual peptides alone
Read more about food sources of vitamin B12