Ionic Single Minerals from Trace Minerals Research are formulated individually to give you control over your personal health. Ionic B12 provides 1,000mcg of Vitamin B12 per serving, plus a full spectrum of over 72 naturally-occurring ionic trace minerals in an ionic form. Vitamin B12 plays a crucial role in multiple metabolic functions, including enzyme production, Dna synthesis, hormone balance, and healthy nerve and cardiovascular function.