The soft drink 7-Up originally contained which mood-stabilizing psychiatric medication until it was banned by the FDA in 1948?

Lithium

Early 7-Up was marketed as “Lithiated Lemon Soda.” However, historical research finds no evidence that “Bib-Label Lithiated Lemon-Lime Soda” was ever its name; Seven-Up was used from the start. Lithium is now an FDA-approved mood stabilizer for bipolar I disorder.