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The recommended dose for treating vitamin B12 deficiency is 1000 mcg daily. The recommended dose for preventing vitamin B12 deficiency is 1500 mg or 2500 mcg (sublingual tablets) daily. The dose for treating hyperhomocysteinemia is 400 mg daily in combination with folic acid.

How often should you take vitamin B12 1000 mcg?

The exact dosage is determined by your doctor depending on your medical condition. Generally, a daily dosage of 1000 micrograms is used to treat a deficiency without any side effects.

Is 1000 mcg of vitamin B12 good?

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.

What happens if you take 1000 mcg of B12?

There are no adverse effects for excess vitamin B12 intake in healthy people. Neither from food nor supplements. Furthermore, according to a study published in the New England Journal of Medicine, even a daily vitamin B12 intake of 1,000 mcg for 5 years didn't cause any serious adverse effect.

Is 10000 mcg B12 daily too much?

Even though the recommended dietary allowance (RDA) for B12 is only 2.4 micrograms (mcg), some supplements provide 10,000 mcg per serving, or 416, 666 percent of the RDA. That amount of B12 daily for a long time can have potentially serious effects.

Is it better to take B12 daily or weekly?

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.

Can you have too much B12?

Since B12 is a water-soluble vitamin, it's generally considered safe, even at high doses. No Tolerable Upper Intake Level (UL) has been established for B12, due to its low level of toxicity. UL refers to the maximum daily dose of a vitamin unlikely to cause adverse side effects in the general population.

What is a safe amount of vitamin B12 to take daily?

While breastfeeding, the RDA is 2.8 mcg daily. In children, the RDA depends on age. People over 50 years of age are advised to eat foods fortified with vitamin B12 or to take a vitamin B12 supplement. 25-100 mcg daily has been taken by mouth to maintain vitamin B12 levels in older adults.

Is B12 level of 1500 too high?

But a normal level of vitamin B12 in your bloodstream is generally between 190 and 950 picograms per milliliter (pg/mL). Between 200 to 300 pg/mL is considered borderline and your doctor may do more testing. Below 200 pg/mL is low and more testing is needed.

Is 1000mcg too much B12?

A dose of 1,000 mcg or more is considered a high dose of vitamin B12, which is about 400% of the daily requirement of 2.4 mcg.