In one study done by Longhorn Cattle Company, were tested some of the top energy drink brands such as Monster, Red Bull, etc. They found something that will leave your stomach in a knot. These drinks do, in fact, contain bull semen.
The taurine is one ingredient that has come under fire. It is named after the Latin Taurus and means bull. Taurine was first isolated from ox bile in 1827 by the scientists from Australia, Leopold Gmelon and Friedrich Tiedemann.
It is also called an amino acid, even in the scientific literature, but it lacks the carboxyl group and it is not strictly an amino acid. It is present in bulls liver, urine and semen. But, one thing is for certain! The taurine used into the energy drinks such as Red Bull is taken from these sources.
The taurine that is found in the energy drinks is a byproduct of bull testicles and it is considered not to be vegetarian friendly. It is taurine, a naturally occurring substance, present in bull bile and the breastmilk.
The video below shows how this ingredient is extracted from the bulls. It was filmed by one employee of the company that supplies this ingredient to various energy drink companies.
*video taken from piakoteles YouTube channel