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Higher doses of up to 1,000 mcg, or 1 milligram (mg), may be necessary for some (13). Pregnant people have slightly higher vitamin B12 needs than the general population. Low maternal levels...
1,000 mcg, but your body absorbs only a small percentage of it. These doses are considered safe. Check the Supplement Facts label to see how much vitamin B12 a supplement contains. A prescription form of vitamin B12 can be given as a shot. This is usually used to treat vitamin B12 deficiency.
Vitamin B12 levels are higher, generally 50–500 mcg, in supplements containing vitamin B12 with other B-complex vitamins and even higher, typically 500–1,000 mcg, in supplements containing only vitamin B12.
Left untreated, a vitamin B-12 deficiency can lead to anemia, fatigue, muscle weakness, intestinal problems, nerve damage and mood disturbances. The recommended daily amount of vitamin B-12 for adults is 2.4 micrograms (mcg). Most people can get enough vitamin B-12 in the foods they eat.
Learn more about VITAMIN B12 uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain VITAMIN B12.
The typical OTC vitamin B12 dosage is 500 mcg to 1,000 mcg (1 mg) daily. Your body can’t absorb more than this at a time, so higher doses aren’t recommended. Keep in mind that OTC vitamin B12 isn’t approved for any health conditions.
Lifelong vitamin B12 supplements may be required at doses between 100 and 1,000 micrograms. As such, "B12 vitamin 1,000 mcg" refers to a high dose (1,000 micrograms) of vitamin B12 suitable for someone with nutrient absorption issues or pernicious anemia.
If your vitamin B12 levels are low, a common recommended OTC dose is about 1,000 mcg daily. But your healthcare provider can advise you about how much vitamin B12 you should look for in a supplement. The amount of vitamin B12 in OTC dietary supplements varies.
Those over 65 years of age should take at least 1,000 mcg (µg) cyanocobalamin every day. And, here’s a tip: If you’re experiencing deficiency symptoms, the best test is a urine MMA—not serum B12 level). How much vitamin B12 should be taken at different stages of life?
Find patient medical information for Vitamin B-12 oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.