I second Ultra on this one,
I too have PAS from isotretinoin and got my first Pfizer vaccine more than 3 weeks ago. Had put it off for a while due to the obvious bad experience I had with medications in the past. But I bit the bullet and went to get it done due to my need to travel around christmas time. I cannot report any adverse effects other than a stuffy nose for a few days and a sore arm. Other than that it hasn’t hindered my recovery at all, I’m still getting better and I would recommend everybody to get the vaccine if that is what you desire. Not all medicine is equal and what we experienced with Finasteride and Isotretinoin is very rare. Don’t let one bad experience cloud your thinking.