Vitamin B12 Dosage for Seniors – Deficiency & Side Effects


Vitamin B12 dosage for seniors is important to recover the deficiency of this vitamin. Experts keep finding the advantage of this vitamin in the daily diet routine. Your body does not produce vitamin B12. It is essential to intake it from external sources.

We all know, vitamin and nutrients are important for the seniors. As per the study, 20 percent of old aged people have a deficiency of this vitamin. A deficiency of the vitamin can affect good health. In seniors, it can cause walking problems.

Vitamin B12 is the essential requirement of your diet. Many companies manufacture this vitamin as a supplement, you can purchase it from the nearby medical store.

It is prescribed by the physician if you experience the deficiency of this vitamin. Moreover, you can find it from the multivitamin supplement.

However, you can source it from animal food including beef liver, eggs, fish, and meat.  Other sources of vitamin b12 are milk, nutritional yeast, and pills.

Here, in this article, we are going to explain to you the importance of vitamin B12 and a daily dose requirement in old aged people. You will get to know Vitamin b12 deficiency causes in the senior people.

What is Vitamin B12?

Vitamin B12 is an essential water-soluble vitamin supplement for the body known as cobalamine.  It is a cofactor in the production of red blood cells, cell metabolism, the function of the nervous system, and DNA production.

Moreover, this is stored in the liver and also important for the function of a healthy heart and developing the brain in the fetus.

This is one of the most structurally complex vitamins. This is identical to four more chemical compounds, these are cyanocobalamin, hydroxycobalamin, adenosylcobalamin, and methylcobalamin.

It is generally produced by the bacteria. The human and animal source it from the bacteria present in the food. It is also known as cyanocobalamin that is used to treat deficiency of vitamin b12 in the blood.

It is mostly found in animal-based food including meat, fish, egg, and milk. Unfortunately, deficiency of vitamin b12 can affect normal health in many ways.  You are at a high risk of lower vitamin b12 if you do not focus to get it from your diet.

The deficiency of vitamin b12 shows after many years and it is too tough to diagnose it. Since your body does not produce this vitamin, you have to focus on natural sources of food or pills supplement for the fulfillment of vitamins.

Cyanocobalamin is the synthetic source of vitamin b12 used to treat the deficiency of the vitamin.

vitamin b12 dosage for seniors is important for the prevention of health issues such as cardiac disease, liver function, cell function, and many more.

What is a Vitamin B12 Deficiency?

What is a Vitamin B12 Deficiency

A vitamin B12 deficiency occurs when your body does not have anymore vitamin b12 in the stock. It is an important factor in the production of red blood cells. Once the stock of this vitamin ended, the count of RBCs gets decreases.

You will start feeling weakness because the RBCs carry oxygen to a different part of the body and make them function properly. The shortage of RBCs lowers oxygen transmission throughout the body. Without the RBCs your tissue and cells become weak.

Additionally, proper vitamin b12 dosage for seniors is important for energy production, However, there is no valid evidence that intake of vitamin b12 pills elevate the energy levels in seniours.

The following factors may decide the seniors do not get the proper dosage of vitamin b12. This is also applicable to all of us.

  • A regular vegan diet
  • Old aged people ( over 50 years)
  • GIT disorders
  • Surgeries on GIT tract including weight loss  surgery
  • A diabetic drug such as metformin
  • Antacid
  • Regular consumption of alcohol

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Why Do You Need Vitamin B12?

Vitamin B12 plays an important role in the proper functioning of the body. It is an essential factor in producing red blood cells and DNA synthesis.

Additionally, it is important for the function of the brain, cell metabolism, cell function, and heart function. However, it plays an important role in reducing the amino acids known as homocysteine, which can affect health in several ways including heart disease, stroke, and nerve disorder.

You should know one thing, your body can store vitamin b12 for many years. However, you are at risk of mild to moderate deficiency.

Why a Proper Vitamin B12 Dosage for Seniors is Required?

A recommended vitamin b12 dosage is important in your daily life. In an adult, the dose is 2.4 mcg per day. The dose requirement for pregnant and breastfeeding mothers is higher.

Most of the vitamin supplement contains a higher level of vitamin b12 with the combination of other vitamins. After the ingestion of vitamin b12 or vitamin b12 foods, it goes down to the stomach. However, stomach acid plays an important role in the breaking down of the vitamins.

The small intestine absorbs the vitamin b12 and helps to store it inside the liver. It can be stored up to many years and provide energy to the cells.

Although, old aged people get enough vitamin b12 from their diet. After a certain age, their stomach loss the ability to digest the vitamin b12.  In geriatrics over the age of 55, their stomach reduces the production of digestive enzymes and acids.

A proper vitamin b12 dosage in seniors is required after a certain age because of the following reasons: –

  • reduce the production of stomach acid and enzymes due to weakening of the stomach cells
  • Taking antidiabetic drug such as metformin for a long time can increase the chances of deficiency
  • Regular consumption of alcohol
  • Surgery of GIT tract or removal of any organ

A proper dose of vitamin b12 requires in the older patient because it needs to fulfill for the proper function of the body.

If a recommended seniors for vitamin b12 dosage are not getting, it can cause fatigue, anemia, memory problems, or walking problem.

It is important to take it seriously and treat it well to avoid other health problems such as cardiac problems, RBCs manufacturing, and cell metabolism.

Suggested Vitamin B12 Dosage for Seniors

Vitamin B12 Dosage for Seniors

Older people are at high risk of vitamin b12 deficiency. In comparison to adult, old aged people contains a lower level of vitamins in the blood.

Over the age of 50, your body decreases the production of stomach acid that is an essential factor of the absorption of vitamins.

It was recommended to access vitamin b12 dosage through supplements and food.

As per the study, a 500mcg of daily vitamin b12 dosage for seniors is recommended to normalize the level of vitamin in old aged people.

A 1000mcg of daily vitamin b12 dosage for seniors is recommended in a few patients.

If you are purchasing the OTC product to self-treat, read the instructions given on the label carefully before starting the medication. If you find any confusion, talk to your doctor.

If the doctor has suggested vitamin b12 dosage, take as per the instructions given by the doctor.

Generally, this medication is taken orally, usually once or twice a day. You need to use the product as given a recommended period of time.

A huge brand of cyanocobalamin is available in the market. You need to pick the right and effective one.

A liquid vitamin b12 dosage for seniors is available in the market. You need to read the instruction first before measuring it.  A right dose measurement is required for the proper benefits.

Side Effects of Vitamin B12 Dosage for the Seniors

There are no major side effects is reported ever. But if you have any rotational effect, contact your doctor immediately.

If it is prescribed by the doctor, he/ she must be ensured about the benefits of this vitamin. If you are anemic, it can cause low potassium levels in the blood. A low potassium level can tender the leg muscles, weakness, and irregular heartbeat.

A serious allergic reaction is not reported ever, You can call your doctor if you find any symptom of rash, itching, swelling, dizziness, and trouble breathing after taking the medication.

If you find any kind of unusual side effects apart from the list mentioned above, call your doctor right away.

A vitamin b12 dosage for seniors can cause digestive problems in them because of the lower production of digestive enzymes.



Before starting the medication, tell your doctor if you have any allergic reaction with the medication. Apart from this, if you are allergic to any kind of food and other medication, it is important to tell your doctor about it.

If you have any past surgeries of stomach, inform your doctor about that. Moreover, if you have any health problems including eye disease, gout, a blood disorder, anemia, low potassium level in the blood, and folic acid deficiency. Tell your doctor before starting the medication.

Vitamin b12 dosage for pregnancy is safe when taken in the proper recommended dose. However, vitamin b12 dosage for seniors is essential for the prevention of cell disorder.

What is the Recommended Vitamin B12 Dosage for the Seniors?

Vitamin B12 dosage for the seniors of 500mcg per day is recommended. People over the age of 50 are at high risk of deficiency of vitamin b12. Due to the reduction of enzymes and acid of the stomach, they lose the ability to digest vitamin b12.
A lower level of vitamin b12 can affect health in many ways including the reduction of cell function and lower the production of RBCs

What is the Recommended Vitamin B12 Dosage for the Seniors in the UK?

There are several functions of vitamin b12 in our bodies. A proper balance diet including meat, milk, eggs, and cereals can provide the required vitaminb12 dosage for seniors. A recommended dose is 500mcg per day. In a few cases, the dosage may be 1000mcg per day.

How much Vitamin B12 should I take daily?

The daily recommended dose of vitamin b12 dosage in adult patients is required of 2.4 mcg /day. You can increase your dose safely. Before increasing the dose, ask your doctor right away.

What do the Vitamin B12 pills do?

This is the nutraceutical supplement that helps keep the body’s nerve and blood healthy. It helps in the production of  RBCs and DNA. Vitamin b12  helps prevent many health diseases such as megaloblastic anemia.

Which form of vitamin B12 is Safe?

Methylcobalamin is the most active and safe form of vitamin b12. It is easily absorbable by the tissue and retains for a long time. It is the most effective for nerve disorder and liver disorder.

Does vitamin b12 1000mcg side effects?

There are no major side effects that have been reported using vitamin b12. But if you face any severe unusual symptoms, call your doctor immediately.

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