How different

I have a bit of a sore throat this week and bought myself some Ricola. It tastes just the same as in Europe, as it was actually manufactured in Laufen, Switzerland. Some people insist that Coca-Cola tastes different in every country. Is it just the local water, or does the company really provide a different syrup formula for every country? Do Moroccans really want to drink different Cola from Indonesians, says who?