‘Pellagra’ disease is caused due to the scarcity of:
Nicotinic acid
The most common symptoms of niacin deficiency involve the skin, the digestive system, and the nervous system (3). The symptoms of pellagra are commonly referred to as the three D's: dermatitis, diarrhea, and dementia. A fourth D, death, occurs if pellagra is left untreated
B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism. Though these vitamins share similar names, research shows that they are chemically distinct vitamins that often coexist in the same foods. In general, supplements containing all eight are referred to as a vitamin B complex. Individual B vitamin supplements are referred to by the specific name of each vitamin (e.g., B1, B2, B3 etc.)