what is the difference between nan and nan optipro?
NAN Pro is being renamed NAN OPTIPRO. From September 2017, our NAN Pro range will have a new look and be rebranded, NAN OPTIPRO. The new packaging design and name will affect NAN Pro 1 Gold, NAN Pro 2 Gold, and NAN Pro 3 Toddler. There is no change to the formulation.