How much vitamin b12 should I take per day?

It’s mandatory to follow the recommended dosage of vitamins and minerals; their values are set according to the body’s needs. If anyone takes a low or high amount of vitamins and minerals than the standard value, they may experience serious health problems. The extremely high level of fat-soluble vitamins like E and K and minerals like selenium and others produce toxins in your body. Thus, you should be aware of the daily intake values of all vitamins and minerals. You can get help from the internet.

What is vitamin b12?

Vitamin b12 is a water-soluble micronutrient of the B-group family, and your body can store it for nearly 4 years. Your body uses it in two active forms, methylcobalamin and adenosylcobalamin, to kick off functions. There are numerous articles on whether vitamin B12 can help you lose weight, but as with any diet plan a healthy level of exercise is required for best results.

It participates in many significant biological functions, including energy production, repairing and making of nerve cells, red blood cells, degrade homocysteine, growth of skin, nails, hair, etc.

The human body can’t synthesize; therefore, you should take from exogenous sources to meet the body’s demands. The primary sources of vitamin b12 are animals, fortified food, and dietary supplements.

Its deficiency is less likely in adults but more likely in overage adults because their body reduces the ability to bind with intrinsic protein, consequently, less absorption of it.

How much should I take per day?

You should take vitamin b12 amount corresponding to the requirement of the body. The needs of vitamin b12 depend on your lifestyle, age, and gender. You can also use vitamin b12 supplements to prevent your body from its dearth. Let’s together find out its daily recommended dosage.

Adults under 50 years old

It’srare for young adults to experience its deficiency. The recommended daily intake (RDI) for adults of vitamin b12 is 2.4 mcg/day. Diet can fulfill this requirement, and doctors do not advise using supplements.

Rare cases may be possible; if anyone has no intrinsic protein in their stomach, facing trouble in its absorption. Don’t worry; methylcobalamin supplements are available; you can use supplements by following the instructions of a healthcare practitioner.

Adults over 50 years old

Older adults can get its deficiency readily due to many reasons; body working ability is reduced gradually with aging. Their bodies produce less amount of hydrochloric acidand intrinsic proteins that are needed for absorption. The RDI value for older adults is the same as 2.4 mcg per day for young adults.

It would be best to use vitamin b12 supplements to meet the body’s needs. The supplements contain almost active forms of vitamin b12 that do not need to bind with any proteins; the body is directly absorbed.

Childbearing and Lactating mothers

The RDI value of vitamin b12 is higher than the general population, 2.6 mcg. During pregnancy, constantly occursrapid division of cells; therefore, a high dose is suggested. Its deficiency may cause premature birth or miscarriage, and baby is produced with neural tube defects. Thus, childbearing women should consume vitamin b12 supplements.

After delivery, mothers should not quit taking supplements because the baby depends on the mother’s milk for its growth. Therefore, the RDI value for lactating women is 2.8 mcg per day.


Vegetarians or vegans are present at a high risk of vitamin b12 deficiency. They don’t like to eat animal products, only rely on vegetables. And vegetables are a poor source of vitamin b12. It’s a pretty much hard challenge for vegetarians to fulfill the demands of vitamin b12. They should use fortified foods and supplements to obtain vitamin b12.


Cobalamin is, the other name of vitamin b12 which plays a crucial role in the human body. You should consume it according to the recommended values suggested by the Food and Nutrition Board of the Institute of Medicine at National Academies. The RDI values for adults, pregnant women, nursing women are 2.4, 2.6, and 2.8 mcg per day, respectively.


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