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Cyanocobalamin is the most used and given in doses from 100 to 1,000 mcg

They include vitamin D, calcium, Iron, zinc, and Magnesium

The 4 mm needle is long enough to traverse the skin and reach the subcutaneous tissue with minimal risk of intramuscular or intradermal penetration

[91] Since only bacteria and some archea possess the genes and enzymes necessary to synthesize vitamin B 12 , plant and algae sources all obtain the vitamin secondarily from symbiosis with various species of bacteria, [5] or in the case of fermented plant foods, from bacterial fermentation

Aids in the absorption of calcium and phosphate in the body (These are essential for muscles, teeth and bones)

Vitamin B12 helps promote hair growth by improving blood circulation to the scalp