If a B12 deficiency exists, we treat it separately rather than automatically adding it to your injections
Our Quality Process Purity, Sequence Identity, Endotoxin Level, Sterility, Content, and Appearance - every batch, every compound, no exceptions
General Precautions: Vitamin B12 deficiency that is allowed to progress for longer than 3 months may produce permanent degenerative lesions of the spinal cord
Also, mice carrying a genetic mutation that lack one of the igf1r alleles ( igf1r +/ ) show a 10 % reduction in post-natal growth, insulin resistance and glucose intolerance [237]
High vitamin B12 levels are generally not harmful in individuals with normal kidney function, as there are no known adverse effects of excess B12 in those with proper renal function