The Most Symptoms Of Vitamin B Complex Deficiency

Vitamin B complex is one of the essential vitamins in the body, and its deficiency causes many symptoms, so what are the symptoms of vitamin B complex deficiency? Let’s get to know it.

Vitamin B complex is one of the vitamins soluble in water that is excreted in the urine directly, which prevents it from being stored in the body and exposes it to deficiency. It also appears in the form of symptoms of vitamin B complex deficiency.

Symptoms of vitamin B complex deficiency

Vitamin B complex consists of several types such as vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B7, vitamin B9, and vitamin B12.

Each type of vitamin B complex has specific symptoms, so let us know them as follows:

1. Symptoms of thiamine deficiency

Vitamin B1 or thiamine, and it is the vitamin responsible for converting food into energy. It is present in abundance in various types of food, such as grains, meat, fish, and bread, and it is rarely deficient in people. (12)

So, there are some symptoms of vitamin B1 deficiency, including:


Weight loss.

Confusion and irritability.

Memory impairment. (34)

Muscle weakness.

Heart problems, such as an enlarged heart muscle.

Neurological problems.

2. Symptoms of riboflavin deficiency

Vitamin B2, known as riboflavin, is a vitamin available in meat and vegetables, and its deficiency usually accompanies a deficiency of another vitamin from the water-soluble vitamins. (56)

Some symptoms distinguish riboflavin deficiency, which is part of the symptoms of vitamin B complex deficiency in the body, including:

Cracked sides of the mouth.

Swollen and red gums and throat.

Sore tongue.

Skin dryness.

The presence of red hairs in the white areas of the eyes.

3. Symptoms of vitamin B3 deficiency

Vitamin B3, also known as niacin, is a vitamin that helps convert carbohydrates into energy and contributes to sex hormone formation. (7)

There are symptoms of vitamin B3 deficiency, which are part of the symptoms of vitamin B complex deficiency, including:


Exhaustion and fatigue.



Poor blood circulation.


Severe vitamin B3 deficiency may lead to Pellagra’s disease, which negatively affects several systems in the body, such as the nervous system, the digestive system, mucous membranes, and the skin.

4. Symptoms of vitamin B5 deficiency

Vitamin B5, known as pantothenic acid, is an acid available in all foods, making its deficiency very rare. (8, 9)

Symptoms of a possible vitamin B5 deficiency include the following:

Fatigue and dizziness.

Stomach pain.


Muscle spasm.

5. Symptoms of vitamin B6 deficiency

Vitamin B6, or pyridoxine, we can obtain it through a varied diet. (1011)

So, there are distinct symptoms associated with vitamin B6 deficiency, including:

Fatigue and loss of body energy.

Skin rash.

Dry and chapped lips.

Weak immunity.

Numbness in the extremities.

Mood change.

6. Symptoms of vitamin B7 deficiency

Vitamin B7 is also known as biotin. Most biotin comes from proteins found in meat, fish, eggs, and some vegetables such as potatoes. (12)

The symptoms of vitamin B complex deficiency vary according to the type of vitamin present at less than its normal level. And the symptoms of vitamin B7 deficiency include:

Hair loss and lack of its density.

Rashes around the mouth and nose.



Weakness in the nails

7. Symptoms of folate deficiency

Vitamin B9, also known as folic acid, is necessary for the body as it aids in the formation of red blood cells and is abundant in green leaves and the liver. (13)

Some symptoms distinguish vitamin B9 deficiency from others, such as:

Paleness of the complexion.


The lethargy of the body.


8. Symptoms of vitamin B12 deficiency

Vitamin B12 is one of the essential vitamins needed in the formation of red blood cells. Vitamin B12 is present in meat, eggs, milk, and cheese. (141516)

Symptoms of vitamin B12 deficiency are part of the symptoms of vitamin B complex deficiency, including:

Body fatigue with a mild headache.

Paleness of the complexion.

Redness of the tongue

Bleeding in the gums.

Stomach ache with weight loss.

Diarrhea or constipation.

Numbness in the fingers.


Methods for detecting vitamin B complex deficiency

After identifying the symptoms of vitamin B complex deficiency. A laboratory examination is performed to confirm the deficiency through the following:

Blood sample: they take a blood sample from a vein, and the patient must be alerted to the necessity of fasting for several hours before taking it.

Pee sample: Urine samples are taken over 24 hours, stored in the refrigerator, and sent to the laboratory.

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