The daily requirement for B-12 is tiny. One pill is enough for a whole year.
Daily requirement in grams/day:
Potassium 3.5
Phosphorus 1.0
Calcium 1.0
Magnesium .35
Iron .27
Zinc .075
Manganese .075
Copper .022
Others < .01
Everything fits into one pill except potassium, phosphorus, and calcium. These can be supplemented separately.
Vitamins: jaymaron.com/ecology.html [jaymaron.com]