For most individuals, B12 injections are safe and well-tolerated
The others have theoretical relevance supported by varying amounts of indirect evidence
Meanwhile, pharmaceutical companies depend on a system that rewards the enormous investment required to develop FDA-approved medicines otherwise they wont spend the money to develop ground breaking drugs like GLP-1s in the first place
Common signs include: Feeling tired all the time, even after sleeping well Brain fog or trouble focusing Forgetfulness or memory lapses Feeling low, anxious, or irritable Pins and needles in your hands or feet Pale or washed-out skin Weakness or loss of strength If its not treated, low B12 can eventually lead to nerve damage and other long-term health issues
It can be harsher on the peptide structure if not handled correctly and can be more irritating at the injection site in animal studies
For purposes of B12 injections, It is manufactured in a laboratory and used to treat or alleviate anemia caused by B12 vitamin deficiency