Why? I could have drink up to 4 per day as younger but now I occasional drink them as I did today... red bull made me feel good always... due to my funny illness I think its combo of caffeine and taurine that actually helps me but old times I admit it was too much... thank god I survived... 🥳🤣✨️🤷‍♀️🧚‍♀️ never ever had a problem...