What is this PEG?



I was told to get AZ to start with cos Pfizer was triggering severe allergic reactions due to PEG. I've been told today there are no half doses (Booster) of AZ but if Pfizer wasn't safe for me at the beginning why will it be now???



I told them I'm not risking allergic reaction and hospital just a couple of days before xmas and refused it. They're going to find out if Moderna will be any safer and contact me after xmas...does that also contain this PEG? anyone know??