The average diet supplies about 5 to 15 mcg/day of vitamin B12 in a protein-bound form that is available for absorption after normal digestion
Reconstitution, units, timing, and cycle
Also, see our article about supplements to take or avoid when taking statins
In cases of compromised stomach functioning, B12-fortified foods and/or B12 supplements allow for better absorption of this nutrient
They work together to release energy from carbohydrates and fats, break down amino acids, and move oxygen throughout your body
Then Wednesday or Thursday rolls around, and suddenly you're dragging through the day, irritable as hell, or staring at your screen unable to form a coherent thought