INFO CARDS – I Niacin - Vitamin - B3 Nicotinamide is recommended as a treatment for niacin deficiency because ? Click to Flip Most common adverse effects of medicinal niacin (500–3000 mg) are flushing. Nicotinamide can be administered in remedial amounts without causing the flushing. What is the cause of Diarrhoea in Pellegra? What is the cause of Diarrhoea in Pellegra? Click to Flip Diarrhea is due to proctitis and malabsorption Share: Facebook