The appropriate MIC B12 dosage for injections varies from person to person and should be determined by a healthcare professional
It is usually found in the brain and can easily cross the barrier between the blood and the brain
However, increasing oral supplement doses (within safe limits) while awaiting medical review is generally considered safe, as B12 has very low toxicity and excess is excreted through the kidneys
Psychiatry Clin Neurosci 2022:1 Kucukkarapinar M, Yay-Pence A, Yildiz Y, Buyukkoruk M, Yaz-Aydin G, Deveci-Bulut TS, Gulbahar O, Senol E, Candansayar S (2022) Psychological outcomes of Covid-19 survivors at sixth months after diagnose: the role of kynurenine pathway metabolites in depression, anxiety, and stress