Niba urya ibiryo birimo vitamine C na PP. Uruhu rwijimye rubaho neza kubera kubura izo vitamine mumubiri wumuntu. Imbuto n"imboga nyinshi bikungahaye kuri acide, cyangwa vitamine C. Kandi indyo yuzuye proteyine yongerera urugero rwa acide nicotinike cyangwa vitamine PP