A brand name for a cola-flavored carbonated soft drink produced by PepsiCo.
From English, created in 1898 by pharmacist Caleb Bradham, originally called 'Brad's Drink' then renamed Pepsi-Cola, possibly derived from 'pepsin' (a digestive enzyme) or 'dyspepsia' (indigestion), as it was marketed as a digestive aid.
Pepsi was originally sold as a medicine and contained pepsin, an enzyme that aids digestion, which is why early advertisements claimed it could cure stomach ailments. The famous Pepsi Challenge blind taste tests in the 1970s revolutionized marketing by directly comparing products to competitors on television.
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