How much B12 should I take daily for anemia?

For anemia from B12 deficiency, you often need much higher doses than the daily recommendation (2.4 mcg), with common treatments involving 1,000 to 2,000 mcg (1-2 mg) of oral B12 daily or weekly injections, especially if absorption is poor (pernicious anemia, GI issues). A doctor must guide this, often starting high to correct deficiency and then adjusting, as amounts vary greatly based on the cause and severity, with some needing lifelong injections.

How much B12 should a person with anemia take?

Supplementation of 1 mg daily is recommended for patients with specific risk factors (e.g., bariatric/gastric surgery patients, those with severe malnutrition, chronic alcohol use, chronic hemolytic anemia and conditions with high cell turnover, and use of antimetabolite medications such as methotrexate).

Can B12 deficiency cause headaches?

Yes, vitamin B12 deficiency can definitely cause headaches, often linked to fatigue, anemia, and neurological issues, with some studies connecting low B12 levels to more severe migraines, possibly due to nerve irritation or reduced oxygen supply to the brain.
 

Is B12 good for uric acid?

Both vitamin B12 and folic acid function in counteracting this toxicity; however, B12 is somewhat more effective. 3. Addition of 6 or 9% glycine to the diet increased blood uric acid levels. Folic acid tended to decrease these high levels of uric acid in the blood.

How much vitamin B12 should you take for anemia?

The recommended daily amount of vitamin B-12 for adults is 2.4 micrograms (mcg). Older adults may need to eat more vitamin B-12. The ability to absorb vitamin B-12 lowers as a person gets older. Older adults may need to eat 10 to 12 mcg of vitamin B-12 to get enough of this vitamin.

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Should I take B12 if anemic?

Key points about vitamin B12 deficiency anemia

Symptoms include weak muscles, numbness, trouble walking, nausea, weight loss, irritability, fatigue, and increased heart rate. Treatment may include vitamin B12 supplements. It is also important to eat a well-balanced diet.

Is 1000 mcg B12 too much daily?

If you're at risk for vitamin B12 deficiency, the following can provide some protection: Supplements. Even the lowest doses in B12 supplements are many times the recommended dietary allowance. Doses up to 1,000 mcg, though unnecessary, aren't harmful.

What are the worst symptoms of B12 deficiency?

The worst B12 deficiency symptoms involve severe nerve damage and mental changes, including persistent numbness/tingling, balance/walking difficulties (ataxia), confusion, memory loss, vision problems, psychosis, and hallucinations, which can become permanent if untreated; also severe fatigue, shortness of breath, and heart palpitations signify serious anemia.
 

What food is highest in B12?

The foods highest in Vitamin B12 are organ meats (like liver and kidney) and shellfish (especially clams), offering thousands of percent of the daily value in small servings, with fortified cereals, dairy, fish (salmon, tuna, sardines), and eggs also being excellent sources. For vegans, fortified foods like nutritional yeast and plant milks are key, as B12 is naturally found in animal products.
 

Who should avoid B12 supplements?

They need to know if you have any of these conditions:

• Anemia.
• Kidney disease.
• Leber's disease.
• Malabsorption disorder.
• An unusual or allergic reaction to cyanocobalamin, cobalt, other medications, foods, dyes, or preservatives.
• Pregnant or trying to get pregnant.
• Breast-feeding.

What depletes B12?

B12 gets depleted by insufficient dietary intake (especially for vegans/vegetarians), poor absorption due to stomach issues (like gastritis, low acid, pernicious anemia, or surgery removing parts of the stomach/intestine), digestive diseases (Crohn's, celiac), certain medications (metformin, acid reducers, some antibiotics), alcoholism, and genetics, with absorption problems being the most common cause.
 

What are the symptoms of severe anemia?

Severe anemia symptoms include extreme fatigue, shortness of breath even at rest, chest pain, rapid/irregular heartbeat, dizziness, pale or yellowish skin, cold hands/feet, brittle nails, mouth sores, and a strong craving for non-food items (pica), indicating the body lacks enough oxygen and needs urgent medical attention. 

What deficiency causes you to feel off balance?

Feeling off-balance, dizzy, or unsteady (ataxia) can be caused by deficiencies in Vitamin B12, crucial for nerve function, and Vitamin D, important for nerve signals and muscle tone, with Iron deficiency (anemia) also a common culprit due to poor oxygen supply to the brain, alongside potential roles for magnesium. These deficiencies affect your nervous system, proprioception (body awareness), and circulation, leading to balance issues, numbness, fatigue, and cognitive problems. 

What type of B12 is best for anemia?

Vitamin B12 deficiency anaemia is usually treated with injections of vitamin B12, called hydroxocobalamin. At first, you'll have these injections every other day for 2 weeks or until your symptoms have started improving.

What level of B12 indicates anemia?

Although the threshold figures will vary from laboratory to laboratory because different laboratories use analytical machines made by different manufacturers the typical cut-off value used to define B12 deficiency is around 148 pmol/L (200 pg/mL) and for a growing number of scientists this is far too low and, if ...

How much B12 should I take to raise my blood levels?

The amount of cyanocobalamin you need depends on the level of vitamin B12 in your blood and why your levels are low. Your doctor or pharmacist will advise you on what dose to take. For adults with diet-related vitamin B12 deficiency, the usual dose is 50 micrograms to 150 micrograms, taken once a day.

What do you crave when your B12 is low?

B12 deficiency can cause specific food cravings, particularly for meat, fish, or eggs, as your body seeks sources of the vitamin, and may also lead to sugar cravings due to its role in serotonin and energy regulation, but it can also manifest as pica (craving non-food items like ice or even bleach in severe cases). These cravings signal your body trying to correct a nutrient imbalance, but clinical testing is needed for a proper diagnosis, as emotional factors also drive cravings. 

What are the facial signs of B12 deficiency?

Cutaneous manifestations associated with vitamin B12 deficiency are skin hyperpigmentation, vitiligo, angular stomatitis, and hair changes. A diagnosis of vitamin B12 deficiency is often overlooked in its early stages because these signs are not specific to vitamin B12 deficiency alone.

How is anemia typically treated?

Treatment for this form of anemia usually involves taking iron supplements and changing the diet. If the cause of iron deficiency is loss of blood, finding the source of the bleeding and stopping it is needed. This might involve surgery. Vitamin deficiency anemias.

Does B12 affect sleep?

Yes, Vitamin B12 significantly affects sleep by influencing your circadian rhythm, energy levels, and mood; low levels can cause fatigue and insomnia, while adequate levels help regulate your internal clock, but paradoxically, high levels (especially from supplements) might also disrupt sleep or advance waking times, so balance is key for better sleep. 

What's the best time of day to take B12?

The best time to take Vitamin B12 is in the morning or early afternoon, ideally on an empty stomach, with water, to support energy production and avoid potential sleep interference. Consistency is key, but morning helps harness its energizing effects and aligns with your body's natural rhythm; avoid taking it close to bedtime. 

What is the fastest way to recover from B12 deficiency?

The fastest way to recover from B12 deficiency, especially severe cases, is through B12 injections (cobalamin), often starting with frequent shots (e.g., every other day for a couple of weeks) to rapidly replenish stores, particularly if neurological symptoms are present, followed by oral supplements or less frequent injections, depending on the underlying cause. While dietary changes and high-dose oral supplements help, injections bypass absorption issues for quicker correction.