How much B12 should you have a day?
The recommended daily intake (RDI) of vitamin B12 is 6 micrograms per day. Deficiency is common, especially in people who follow a vegetarian or vegan diet. In fact, it’s thought that up to 90% of people following these diets have a deficiency ( 2 , 3 ). This is because B12 is only found naturally in animal foods.
What is the best form of B12 to take?
For prevention and treatment of vitamin B12 deficiency, cyanocobalamin in chewable, sublingual, or liquid forms (rather than in a multivitamin) is best under most circumstances.
How much B12 should you take a week?
CategoryVitamin B-12: Recommended Dietary Allowance (RDA) in micrograms (mcg) For children under age 1, only an adequate intake (AI) is available9-13 years1.8 mcg/day14 years and up2.4 mcg/dayPregnant women2.6 mcg/dayBreastfeeding women2.8 mcg/day4 more rowsx26bull;Jan 24, 2021
How many B12 1000 mcg should I take?
For B12 deficiency, a typical injection dose is 1,000 mcg once a week for 4 to 8 weeks and then 1,000 mcg once a month. But dosages can vary depending on if you’re treating severe, mild, or asymptomatic B12 deficiency.
Is it okay to take 1000 mcg of B12?
Taking B12 supplements can be an effective way to treat B12 deficiencies and isn’t necessarily inferior to B12 shots. If you’re deficient, your doc may recommend you take about 1,000 to 2,000 mcg of vitamin B12
What happens if your B12 is too high?
In some people, high levels of B12 may cause gastrointestinal problems such as bloating and diarrhea. And if you have high blood pressure or poor cardiovascular health, having too much B12 may further complicate these issues. Pregnant and breastfeeding women may also need to be especially mindful of B12 levels.
Is 500 mcg of B12 too much to take a day?
The recommended daily intake is between 2 and 2.8 micrograms. However, you can safely go well beyond that number. The max you should have per day is 1,000 micrograms, according to the Harvard School of Public Health, so 500 mcg per day is completely safe
Which form of B12 is best absorbed?
Methylcobalamin
What is the better form of B12?
The bottom line The body may absorb cyanocobalamin better, while methylcobalamin has a higher retention rate. Both can prevent B12 deficiency, but methylcobalamin should be combined with adenosylcobalamin for best results.
What is the purest form of B12?
Methylcobalamin
What is the safest B12 to take?
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.
How much B12 can you take a week?
CategoryVitamin B-12: Recommended Dietary Allowance (RDA) in micrograms (mcg) For children under age 1, only an adequate intake (AI) is available9-13 years1.8 mcg/day14 years and up2.4 mcg/dayPregnant women2.6 mcg/dayBreastfeeding women2.8 mcg/day4 more rowsx26bull;Jan 24, 2021
Is it OK to take 1000 mcg B12 daily?
The most common treatment for pernicious anemia is lifelong vitamin B12 injections, but small amounts of vitamin B12 are absorbed without intrinsic factor. One review concluded that taking 1,000 mcg daily is an effective alternative to injections ( 42 ).
Is 1000 mcg of vitamin B12 daily too much?
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.
Is it OK to take 1000 mcg of B12 a week?
As with any supplement it is prudent not to take more than is required for maximum benefit, so intakes above 5000 micrograms per week should be avoided despite lack of evidence for toxicity from higher amounts.
What are the side effects of B12 1000 mcg?
High doses of B12 supplements may lead to side effects such as nausea, vomiting, diarrhea or weakness. Consult with your doctor before adding any supplements to your diet.
Is 1000 mcg of B12 normal?
The bottom line. B12 is an important nutrient that is popularly used as a nutritional supplement, even by those without a B12 deficiency. 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.
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
Should I take 500 mcg or 1000 mcg B12?
The recommended daily intake is between 2 and 2.8 micrograms. However, you can safely go well beyond that number. The max you should have per day is 1,000 micrograms, according to the Harvard School of Public Health, so 500 mcg per day is completely safe
What does it mean if your B12 is too high?
An abnormally high vitamin B-12 status can be an early sign of liver disease, diabetes, or certain types of leukemia. A doctor may use the results of a vitamin B-12 test to help form their diagnosis.
Is very high B12 serious?
Elevated levels of serum cobalamin may be a sign of a serious, even life-threatening, disease. Hematologic disorders like chronic myelogeneous leukemia, promyelocytic leukemia, polycythemia vera and also the hypereosinophilic syndrome can result in elevated levels of cobalamin.
Should I worry about high B12 levels?
Vitamin B12 does not accumulate to toxic levels. Consuming large quantities does not cause side effects or high levels in your system, whether you get it through food or from taking high-dose supplements. High vitamin B12 in the bloodstream is associated with serious diseases
Can I take 500 mg of B12 a day?
Because it’s relatively safe, no tolerable upper intake level (UL) has been set for vitamin B12. UL is considered the maximum amount of a substance that can be taken safely without side effects.
How many mg of B12 should I take daily?
Vitamin B12 is an essential nutrient. Fish, shellfish, meat, eggs, and dairy products are good sources of vitamin B12. The amount that should be consumed on a daily basis is called the recommended dietary allowance (RDA). The RDA is 2.4 mcg daily for people 18 years and older
What is the best way to take vitamin B12 for absorption?
Methylcobalamin