The Most Expensive Liquids In The World

 GHB, also known as 4-hydroxybutanoic acid, is mainly used to treat narcolepsy, insomnia, cataplexy, and alcoholism. It is also a product of wine, citrus fruits, and beef fermentation. The selling of GHB is illegal in many countries.

11. Gamma hydroxybutyric acid (GHB) — $2,210 per gallon