Despite @shreddedsages claim, Red Bull doesnt seem to cause brain fog. In fact, an RCT has found that it can improve cognitive performance (no, it wasnt funded by Red Bull), with the sugary version Here's What Energy Drinks Really Do to Your Body The Healthy Red Bull Energy Drink Sugarfree Berry Edition 250ml Sportsfuel Supplements NZ If they say that a 1 redbull is same to 1 coffee. Does that mean they are implying its safe to drink 1 2 per day?