While the overall safety profile is favorable, no injectable treatment is entirely without risk, and patients deserve full disclosure before consenting to the procedure
Peptides are not illegal to use or own, but as the BBC notes, "they are not approved for human use, so are not subject to the quality controls that govern pharmaceutical manufacturing." In 2023, under the Biden administration, the FDA classified a group of over a dozen peptides as Category 2 substances, which may "present significant safety risks," effectively banning their use
Also, in most people, methyl and adenosyl B12 can inter-convert easily, so the exclusive supplementation of methyl B12 is enough in most cases
In a clinical or home-care setting, this kind of reliability is definitely a big deal
Getting a prescription for vitamin B12 injection means you need a doctors watch