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When taken at appropriate doses, vitamin B-12 supplements are generally considered safe. While the recommended daily amount of vitamin B-12 for adults is 2.4 micrograms, higher doses have been found to be safe. Your body absorbs only as much as it needs, and any excess passes through your urine.
Suggested dosages. The recommended daily intake (RDI) for vitamin B12 for people over 14 is 2.4 micrograms (mcg) (1). However, you may want to take more or less, depending on your age,...
Though doses of up to 2,000 mcg of vitamin B12 are considered safe, it’s best to speak with a doctor to find out whether taking a supplement is necessary.
The amount of B12 a person needs depends on their age or pregnancy status and can be broken down as follows: Children 1–3: 0.9 microgram (mcg)/day. Children 4–8: 1.2 mcg/day. Children 9–13: 1.8 mcg/day. Teens 14–18: 2.4 mcg/day. Adults: 2.4 mcg/day.
The amount of vitamin B12 in supplements varies widely. Some provide doses of vitamin B12 that are much higher than recommended amounts, such as 500 mcg or 1,000 mcg, but your body absorbs only a small percentage of it. These doses are considered safe.
If you are not deficient, I believe it is safe to take a B12 supplement at a lower dose; you don't even have to take it every day because B12 is well-stored by the body. Further, if you want to ensure better absorption of B12, you can try preparations that can be absorbed under the tongue.
According to an article in the journal American Family Physician, researchers have found that supplements containing as much as 1,000 times the recommended daily allowance (RDA) are safe. The...
Even at large doses, vitamin B12 is generally considered to be safe because the body does not store excess amounts. Interactions with Medications. Vitamin B12 has the potential to interact with certain medications. In addition, several types of medications might adversely affect vitamin B12 levels. A few examples are provided below.
Most people get enough B12 from food, but your age, certain conditions, and medications may put you at risk for a deficiency. There’s a good reason to make sure you have enough vitamin B12 in your body. It’s a key vitamin that helps keep blood and nerve cells healthy, converts food into energy, and contributes to the creation of DNA, the ...
2. 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.