Trace Minerals Research’s individual ion minerals are individually formulated to give you control over your personal health. Ionic B12 provides 1,000 mcg of vitamin B12 per serving, in addition to a full spectrum of more than 72 natural ion oligominerals in ion form. Vitamin B12 plays a crucial role in multiple metabolic functions, including enzyme production, DNA synthesis, hormonal balance, and healthy nerve and cardiovascular function.