Elixir of Youth (or Empire-Building)

Sumner Redstone's anti-aging secret is a Brazilian berry:

A dark-purple elixir with a cult-like following, MonaVie is an antioxidant-rich concoction whose main ingredient is the Brazilian açai berry (pronounced ah-sigh-ee), long touted among health nuts for its anti-aging ingredients.

Vitamin-water it's not: MonaVie costs $40 a bottle, and you can't get it in stores; it's marketed only through the company's network of thousands of individuals who sell it out of their homes (think Avon or Tupperware).