Brief periods outside refrigeration are not always catastrophic
This tier has the highest rate of independent testing failures in community reports including product that tests as sterile water with no benzyl alcohol, sub-spec preservative concentrations, and endotoxin levels above USP limits
In the nervous system, B12 deficiency causes symptoms affecting the nerves (numbness, tingling, tremors, balance problems) and the mind (depression, brain fog, mood swings, and, in rare cases, hallucinations and psychosis)
It does not extend to outpatient procedures such as B12 injections unless you are hospitalized and the injection is part of your treatment plan during your stay
Typical recovery timelines for such injuries run three to four months