Even the coffee in McDonalds isn't safe I'm afraid, it contains all this crap (see below). My Mrs noticed she was always sick if she had one of their coffees, seems like almost nothing is safe if it comes from McD. If you drink their coffee you're slowly poisoning yourself
"sodium phosphate, sodium polyphosphate, Di-Acetyl Tartrate Ester of Monoglyceride, sodium stearoyl lactylate, tetra sodium pyrophosphate, sodium hexametaphosphate, sodium citrate, and carrageenan."