Is it OK to take 1000 mcg B12 daily?

Vitamin B12 dosage and frequency

But dosages can vary depending on if you're treating severe, mild, or asymptomatic B12 deficiency. For vitamin B12 pills, most people take these daily in doses recommended by their doc but taking 1,000 mcg daily is pretty standard.

What are the side effects of B12 1000 mcg?

Can you overdose on vitamin B12?

You cannot overdose on vitamin B12 because any excess you simply pee out. If you get b12 shots, you may experience side effects like dizziness, nausea, and fatigue. It is possible to have elevated B12 levels in blood tests, which may indicate cancer or diabetes.

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 is vitamin B12 1000 mcg good for?

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.

The Optimal Vitamin B12 Dosage for Adults

Is it OK to take 2 500 mcg of B12 a day?

Cobalamin Has Few Side Effects

Fortunately, the authors of a 2018 report in Food Fortification in a Globalized World concluded that even large doses of B12 remain safe, so 2,500 micrograms shouldn't pose a health problem.

Is B12 level of 1200 too high?

An abnormally high vitamin B-12 status is anything over 900 pg/mL. This result may suggest liver or kidney problems, diabetes, or certain forms of leukemia.

Is B12 level of 1500 too high?

There is no consensus on the definition of high or elevated B12. Previous studies have chosen a variety of levels to represent high or very high B12 (pmol/l) levels. Some examples include: 664.2¹⁹; 513¹; 700 (high) and 1500 (very high)¹¹; and 601 (high) and 1000 (very high)¹⁰.

Is 1000ug B12 too much?

However, vitamin B12 has been shown to cause rare side effects in some cases. Vitamin B12 injections may lead to skin conditions, such as acne and dermatitis (rash) ( 21 ). High doses of B vitamins over 1,000 mcg have also been associated with complications in people with kidney disease ( 22 ).

Does vitamin B12 cause weight gain?

Despite the numerous processes in which vitamin B12 is involved, there's little evidence to suggest that it has any influence on weight gain or loss.

Can vitamin B12 cause heart problems?

Macrocytosis associated with vitamin B12 deficiency is also associated with fatal and non-fatal coronary disease, myocardial infarction, stroke, and other circulatory health problems.

Why is my B12 over 2000?

The most common cause of high B12 in the blood is due to recent ingestion or injection of supplemental vitamin B12. We don't worry about overdosing on B12 supplements because excess can be excreted in your urine. It could also be possibly from your diet if high in animal products such as meat, eggs, and shellfish.

Can too much B12 cause neuropathy?

Thus, vitamin B12 may be associated with both sensory and motor peripheral nerve function. In older adults, the prevalence of poor peripheral nerve function and neuropathy is high and increases with age^18–21.

What should a women's B12 level be?

Normal values are 160 to 950 picograms per milliliter (pg/mL), or 118 to 701 picomoles per liter (pmol/L).

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 ...

Can you overdose on vitamin B?

Mild overdose of Vitamin B can cause problems like Headache, Upset stomach, and Weakness of the body. Acute overdose can cause symptoms like Cardiac arrhythmia i.e, irregular heartbeats, Hypotension, convolutions, a key symptom for thiamine overdose is lips turning blue.

How much B12 should a woman over 50 take?

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.

How long does it take for B12 to kick in?

It may take a few weeks before your vitamin B12 levels and symptoms (such as extreme tiredness or lack of energy) start to improve. If you have hydroxocobalamin injections to boost your vitamin B12 levels at the start of treatment, the cyanocobalamin tablets may start to work within a few days.

How much B12 should a woman over 60 take?

What's the recommended dosage of vitamin B12 for seniors? The recommended daily allowance of vitamin B12 for adults is 2.4 micrograms. Experts have estimated that a Western diet contains 5-7 micrograms of vitamin B12, and a multivitamin often contains 12-25 micrograms.

How do you feel when your B12 is 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.

What are the symptoms of low B12?

What happens when your vitamin B12 is low?

Constipation, diarrhea, loss of appetite, or gas. Nerve problems like numbness or tingling, muscle weakness, and problems walking. Vision loss. Mental problems like depression, memory loss, or behavioral changes.

Does vitamin B12 raise cholesterol?

They found that low levels of vitamin B12 were associated with higher levels of total cholesterol, LDL (bad) cholesterol, and triglycerides—even after adjusting for the effects that body mass index, abdominal fat, and total body fat percentage have on the body.

Can B12 cause high cholesterol?

Three independent clinical studies of women (i) non-pregnant at child-bearing age, (ii) in early pregnancy, and (iii) at delivery showed that low vitamin B₁₂ status was associated with higher total cholesterol, LDL cholesterol, and cholesterol-to-HDL ratio.