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Vitamin B3 - Niacin

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Η Vitamin B3, also known as Niacin, is an important water-soluble vitamin of the B group, which has multiple functions in the body

Properties and Benefits of Vitamin B3 (Niacin)


  • Role in Metabolism: Helps to convert food into energy, positively affecting the metabolism.
  • Cardiovascular Health: It has the ability to increase the levels of high density lipoproteins (HDL - "good" cholesterol) and lowers triglycerides​.

Foods with Niacin:


  • Yeast
  • Γάλα
  • Meat
  • Cereals

Niacin Deficiency Symptoms:


  • Skin lesions
  • Disorders of the digestive system
  • Nervous disorders

Factors Leading to Deficiency:


  • Inadequate nutrition
  • Chronic diseases
  • Excessive alcohol consumption

Vitamin B3 (Niacin) Side Effects


The side effects of Vitamin B3 (Niacin) may vary depending on the dose and form Vitamin B3 which is taken. In the usual doses found in food supplements, h Niacin is generally safe. However, higher doses, especially those given by prescription, may be associated with more serious side effects such as:

  • Skin Erythema and Heat: One of the most common side effects is erythema or "heat" in the skin, accompanied by a burning or itching sensation.
  • Digestive Disorders: Nausea, vomiting and diarrhea.
  • Elevated Blood Glucose: May affect blood sugar levels, especially in patients with diabetes.
  • Liver Disorders: High doses of niacin can cause liver damage.
  • Heart diseases: Rapid heartbeat and other heart function disorders.