Red Bull contains taurine. In some formulations there are 800 mg. of taurine and in other formulations there are 400 milligrams of taurine. Taurine increases hydrogen sulfide levels. High levels of hydrogen sulfide are highly toxic. 1000 milligrams of taurine in supplement form taken three times a day is enough to increase brain fogginess noticeably. Red Bull is exactly the sort of drink that should never be drunk before the kinds of activities very frequently shown in Red Bull advertisements. 3000 milligrams of taurine a day will also lower blood pressure. Given there is a need to reduce blood pressure that should only be undertaken in a regulated way which would not be achieved by chugging Red Bulls. Glucuronolactone, which is a component of Red Bull, is hydrolyzed in the body to glucuronic acid. Increased glucuronic acid activity can result in a decrease of the concentration and metabolic half-life of glucuronic acid substrates, such as prescribed drugs, causing the plasma levels of glucuronidated drugs to fall below their therapeutic threshold. This Wikipedia page has list of some drugs affected by glucuronidation. The safety of glucuronic acid was tested on rats who were not on prescribed drugs. Red Bull also contains sucrose and glucose. In ruling on the safety of Red Bull the European Food and Safety Authority stated, “In the absence of new chronic and acute exposure data, the exposures used in this opinion are based on the data reported by the SCF in 2003, i.e. a daily mean chronic consumption of 0.5 cans per person and a high chronic exposure at the 95th percentile of 1.4 cans per regular consumer.” Red Bull is not a safer soft drink although a half a can a day of Red Bull drunk upon the conclusion of a sports activity could be safe. Formulation of soft drinks is one of the dark arts.