Is it OK to take 1000 mcg of B12 a day?

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.

How much B12 should you take a day?

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. High doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache.

Can you take 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.

How much B12 should a woman over 50 take daily?

The latest guidelines recommend 2.4 micrograms per day of vitamin B12 for those aged 51 and older. Most daily multiple vitamins supply this amount.

Is B12 level of 1500 too high?

While we found an association between high B12 and mortality when we did not control for any potential confounders, after we adjusted for liver function and liver disease, no significant association existed between B12 and mortality using multivariable logistic regression (30-day mortality: OR=1.18, 95% CI 0.81 to 1.72 …

Can Vitamin B12 damage your liver?

The common forms of vitamin B include vitamin B1 (thiamine), B2 (riboflavin), B3 (niacin), B6 (pyridoxine) and B12 (cyanocobalamin). Except for niacin (when given in high doses), there is no evidence that the other B vitamins, in physiologic or even super-physiologic high doses cause liver injury or jaundice.

How much B12 should an elderly person take?

Recommended Vitamin B12 Dosage for Seniors

A recent study found that for seniors, a daily dose of 500 micrograms was efficient in reversing the signs of B12 deficiency. In general, experts recommend 2.5 micrograms of vitamin B12 per day for people over the age of 14.

Which form of vitamin B12 is best?

Methylcobalamin
Methylcobalamin. Methylcobalamin is the most bio-available type of Vitamin B12 which means the body absorbs it more easily. Naturally occurring, it is found in animal-based foods such as meat, fish, milk and eggs so is readily available in many people’s daily diet.

How much B12 should a 70 year old woman take?

Dosages for Older People

Around this age, you should be getting around 2.4 micrograms of B12 a day. Not only does this mean consciously eating foods that contain vitamin B12 but it also means that you should ingest this vitamin as a supplement. By taking supplements, you will ensure that your body absorbs vitamin B12.

Is 5000 mcg of vitamin B12 too much to take?

While megadoses of up to 2,000 mcg are considered safe in treating B12 deficiency, it’s always best to avoid excessive amounts of any vitamin, especially when it’s not needed.

Can you take vitamin D and vitamin B12 together?

No interactions were found between Vitamin B12 and Vitamin D3. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Does B12 raise blood pressure?

Vitamin B12 intake was significantly inversely associated with systolic blood pressure and diastolic blood pressure (P for trend was <0.001 and 0.006, respectively).

When should I take B12 morning or night?

“Take water-soluble vitamins on an empty stomach with a glass of water,” recommends Dr. Perez-Gallardo. And since it can be energizing, Dr. Perez-Gallardo says that the best time to take vitamin B12 is in the morning, so it won’t affect your sleep.

Does B12 help you lose weight?

Vitamin B12 is one of the essential B vitamins that help support a healthy nervous system. B12 works by converting the food we eat into sugar and other types of fuel that keep the body running smoothly. B12 is often associated with weight loss because of its ability to boost metabolism and provide lasting energy.

Can B12 cause hair loss?

Significantly exceeding this dose, however, can cause illness. In general, the symptoms of vitamin toxicity include nausea, gastrointestinal problems like constipation and diarrhea, hair loss, rashes, and nerve damage.

What does B12 1000 mcg do?

Vitamin B12 is a nutrient that helps keep your body’s blood and nerve cells healthy and helps make DNA, the genetic material in all of your cells. Vitamin B12 also helps prevent megaloblastic anemia, a blood condition that makes people tired and weak.

Is 50 mcg B12 enough?

There are no specific dosage recommendations for B12 supplements for mental performance or mood. Optimal dosing of vitamin B12 varies by age, lifestyle, and dietary needs. The general recommendation for adults is 2.4 mcg. Older adults, as well as enceinte and breastfeeding women, require higher doses.

What medications should not be taken with B12?

Certain medications can decrease the absorption of vitamin B12, including: colchicine, metformin, extended-release potassium products, antibiotics (such as gentamicin, neomycin, tobramycin), anti-seizure medications (such as phenobarbital, phenytoin, primidone), medications to treat heartburn (such as H2 blockers …

How can I get 2.4 mcg of B12?

Top foods with B12

The average adult should get 2.4 micrograms (mcg) of vitamin B12 a day, according to the National Institutes of Health. Here are some of the best foods with B12: Clams, 3 ounces: 84 mcg. 100% fortified breakfast cereal (check the label), 1 serving: 6.

Which vitamins should not be taken together?

Dangerous duos: 5 supplement combos to avoid
  • Multivitamins. But, before we get to that, we need to address the elephant in the room: multivitamins. …
  • Calcium and magnesium. …
  • Copper and zinc. …
  • Fish oil and Ginkgo biloba. …
  • Iron and green tea. …
  • Melatonin and St. …
  • Plan A.

What is considered a high B12 level?

An elevated B12 is generally defined as a level higher than the upper limit of the normal range, around 1000 ± 100 ng/L (738 ± 73.8 pmol/L)2,3,4.

What happens when your vitamin B12 is low?

Not having enough B12 can lead to anemia, which means your body does not have enough red blood cells to do the job. This can make you feel weak and tired. Vitamin B12 deficiency can cause damage to your nerves and can affect memory and thinking.

Why is B12 sold in such high doses?

Doctors tend to prescribe these higher dosages to treat conditions related to very low vitamin B-12 levels, such as pernicious anemia. Although vitamin B-12 appears, for the most part, to be safe — even at higher dosages — more is not necessarily better.

Is B12 level of 1400 too high?

The normal range for vitamin B12 (total) is between 200 – 1100 ng/L (nanograms per liter), 200 – 1100 pg/mL (picograms per milliliter), or 148 – 811 pmol/L (picomoles per liter). The normal range for active vitamin B12 (holoTC) is around 20 – 134 pmol/L (picomoles per liter).

How do you check B12 levels?

How does the vitamin B-12 level test work? Doctors usually use a blood test to check vitamin B-12 status, but home urine tests are also available. A doctor can check vitamin B-12 as part of a standard blood test.