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7up was created by Charles Leiper-Grigg who launched his St. Louis-based company "The Howdy Corporation" in 1920.

Grigg came up with the formula for a lemon-lime soft drink in 1929.

The product, originally named "Bib-Label Lithiated Lemon-Lime

Soda", was launched two weeks before the Wall Street Crash of 1929.

It contained lithium citrate, a mood-stabilizing drug... It was one of a number of patent medicine products popular in the late-19th and early-20th centuries; they made claims similar to today's health foods.

Specifically it was marketed as a hangover cure. The product's name was soon changed to 7up.