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Originally called Brad's Drink, the beverage was first marketed as a digestive aid and energy booster. It was renamed Pepsi-Cola because of its pepsin and kola nut content.
He originally called it Brad's Drink, but by 1898 it would be trademarked using the name we call it today: Pepsi. From Brad's Drink in the Soviet Union by Ludmilla Grincenko Wells at the University of Tennessee: Pepsi was original coined as Brad's Drink (Martin 1962, 7).