Read more Rainbovit Vitamin C Baby VITAMIN AND FABMIJS RAINBOVIT C is a useful supplement for its use from the first days of life. Vitamin C is involved in the process of oxidation and reduction metabolism that occurs in the cell, eg in the process and cellular respiration. It is necessary for the formation and collagen, elastin and matrix, and thus due to proper proper cartilage, bone and teeth, wound healing and capillary elasticity.