Depends when/where the ad is from. When they were emergency use authorized, I heard some say they don’t have to list the side effects, but I can’t find that written anywhere.

Actually its more to the effect that pharmaceutical companies can’t advertise their emergency use medications at all. Key words: pharmaceutical companies. So instead, at least in the US, the government took over the advertising for the pharmaceutical companies using US taxpayer money. There is no regulation that says the government has to list the side effects of an emergency use authorized drug that they are promoting for for a pharmaceutical company during a declared national emergency.

Now that at least Pfizer has FDA approval, they are slow walking in their ads, because why not just let the government keep doing their dirty work.