We're a busy family and to be honest, my kids don't have the most well rounded diet. This was showing in their moods, focus, and energy level. First Day has somehow managed to fill most of the gaps. Both kids are growing and gaining weight more consistently, and they are more able to regulate their moods and focus on tasks. Not sure how much of that can be contributed to stellar parenting, but there seems to be a direct causal link with their daily vitamins.