May I know what chocolate is a booster for breastfeed?

Some say chocolate is not advisable for breastfeeding moms. When I browsed through google, I came across this chocolate, it is called MOM'S Breastfeeding Chocolate Milk Booster, but I don't think we have this in the Philippines. Sharing with you the video: https://www.youtube.com/watch?v=tCbIM7qRqG4&noredirect=1