Thank you for your query.
Encephabol is a synthetic drug derived from vitamin B6 and is considered to be effective in senile dementia
. It has been prescribed to your nephew to stimulate his nervous system. This medicine shall have to be imported by you in Turkey if it is not available for which you shall have to follow your government guidelines.
As your nephew is hyperactive with delayed speech he needs to be assessed and managed accordingly. This shall require a multi-disciplinary approach so that he gets the maximum benefit.
I hope I have answered your query to your satisfaction.
Wishing your nephew all the best.