Vin Mariani was a cocaine-laced wine and a predecessor to Coca-Cola, developed by a French chemist who struck it rich after realizing there might be some money in the coca business. The surprisingly addictive drink attracted admirers/junkies such as Ulysses S. Grant, Queen Victoria, William McKinley, Jules Verne, Thomas Edison, Alexandre Dumas, Robert Louis Stevenson and a not-so-shocking-in-hindsight Sir Arthur Conan Doyle.
As for Pope "Hollywood" Leo XIII, his addiction was so complete that he awarded the Mariani Company a Vatican gold medal "in recognition of benefits received from the use of Mariani's tonic" (i.e., for getting His Holiness coked out of his mind for a spiritual high not even found in faith).
"Jesus saved my soul, but coke saves my parties."
The Pope allowed his name and face to be featured on a Vin Mariani advertisement and, in a gesture of the recently defined dogma of Papal infallibility, reportedly carried a flask of the sweet stuff under his robes at all times. You know, for baptisms.
"This town is like a great big pussy ... just waiting to get fucked."