Vitamin B₁₂

• Daily: Take a supplement providing 100–1,000 mcg vitamin B₁₂. (Monitor your status; your physician will adjust accordingly.)

Adults under age sixty-five choose one of the following:

• Daily: Take a supplement providing 25–100 mcg vitamin B₁₂.
• Two to three times a week: Take a supplement providing 1,000 mcg vitamin B₁₂.
• Daily: Consume at least three servings of foods fortified with vitamin B₁₂ that provide at least 2 mcg vitamin B₁₂ per serving. The Daily Value (DV) for vitamin B₁₂ used on food labels is 6 mcg, so if a food provides 33 percent of the DV, it provides 2 mcg.