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What is vitamin B3 deficiency?

Vitamin B3, commonly known as niacin, is one of the B-complex vitamins. It is a water-soluble vitamin, which means it cannot be stored in the body and therefore requires a daily supply from the diet. Since the human body does not produce vitamin B3, it must come from an external source i.e., diet or supplements. It is an essential vitamin responsible for the synthesis of important enzymes which support cell metabolism. Vitamin B3 is important for skin, digestive and mental health.

What are its main signs and symptoms?

  • Mild vitamin B3 deficiency presents with minor symptoms, viz. indigestion, vomiting, depression and fatigue.
  • Severe deficiency presents in humans as a disease called pellagra which is characterised by the 3 D’s, viz.
    • Dermatitis: Itching and inflammation of the skin. It results from sun exposure and DNA damage.
    • Dementia: Cognitive and personality changes.
    • Diarrhoea: Multiple episodes of severe loose stools
  • According to some studies, vitamin B3 deficiency also increases the risk of cancer.

What are its main causes?

Poor dietary intake leads to niacin deficiency. Deficiency of iron, vitamin B2 and B6 also lead to niacin deficiency. Chronic alcoholism is a leading cause of pellagra. Due to niacin deficiency, the body cannot synthesize the amino acid called tryptophan and leads to corresponding symptoms.

How is it diagnosed and treated?        

Diagnosis of vitamin B3 deficiency is straightforward and requires a brief history of the signs and symptoms, such as skin and mouth lesions as well as diarrhoea and dementia. Obtaining a history of social habits like chronic alcoholism facilitates the diagnosis of vitamin B3 deficiency due to malabsorption. Laboratory testing includes a urine test to evaluate the reduction in the levels of N-methylnicotinamide.

Treatment includes a diet of vitamin B3 along with oral supplementation other B-complex vitamins, as multiple deficiencies are common. Vitamin B2 and B6 supplementation is usually preferred along with vitamin B3 for treating the deficiency. The recommended dietary intake for vitamin B3 is 16 mg/day for men and 14 mg/day for women. Fish, meat, grains (other than corn), nuts and legumes are good sources of vitamin B3.

  1. Medicines for Vitamin B3 Deficiency
  2. Doctors for Vitamin B3 Deficiency
Dr. Tanmay Bharani

Dr. Tanmay Bharani

एंडोक्राइन ग्रंथियों और होर्मोनेस सम्बन्धी विज्ञान

Dr. Sunil Kumar Mishra

Dr. Sunil Kumar Mishra

एंडोक्राइन ग्रंथियों और होर्मोनेस सम्बन्धी विज्ञान

Dr. Parjeet Kaur

Dr. Parjeet Kaur

एंडोक्राइन ग्रंथियों और होर्मोनेस सम्बन्धी विज्ञान

Medicines for Vitamin B3 Deficiency

Medicines listed below are available for Vitamin B3 Deficiency. Please note that you should not take any medicines without doctor consultation. Taking any medicine without doctor's consultation can cause serious problems.

Medicine NamePack SizePrice (Rs.)
PolybionPOLYBION 2ML INJECTION24
Rejunex ForteRejunex Forte Injection76
Nurokind InjectionNUROKIND 500MCG INJECTION 1ML14
Meaxon Gold InjectionMeaxon Gold Injection77
VitcofolVITCOFOL SYRUP 100ML84
Meaxon PlusMeaxon Plus Injection86
Nervijen PlusNEW NERVIJEN PLUS 0.75MG CAPSULE 10S0
Medineuron PlusMedineuron Plus Injection 1000 Mcg/100 Mg48
Nurostar CNurostar C 1000 Mcg/12 Mg Injection16
WegamycinWEGAMYCIN GEL 15GM64
NervijenNERVIJEN INJECTION 2ML50
Beplex PlusBeplex Forte Plus Elixir40
Mycobal Plus (Marc)Mycobal Plus Syrup67
Nicoclin 4% GelNicoclin 4% Gel44

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References

  1. Mirella Meyer-Ficca,James B Kirkland. Niacin. Adv Nutr. 2016 May; 7(3): 556–558. PMID: 27184282
  2. Fekih-Romdhane F,Belkhiria A,Ridha R. Severe neuropsychiatric symptoms due to vitamin b3 deficiency. Presse Med. 2017 Jul - Aug;46(7-8 Pt 1):779-782. PMID: 28579011
  3. Ikenouchi-Sugita A,Sugita K. Niacin deficiency and cutaneous immunity. Nihon Rinsho Meneki Gakkai Kaishi. 2015;38(1):37-44. PMID: 25765687
  4. Peechakara BV, Gupta M. Vitamin B3. [Updated 2019 May 15]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2019 Jan-.
  5. National Institutes of Health; Office of Dietary Supplements. [Internet]. U.S. Department of Health & Human Services; Niacin.
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