Shouldn't be any drama with a penicillin allergy, Pfizer one seem's very safe as we've been wacking it into everyone and nobody has had any reactions..... yet
Sorry ,I missed this post
It was on the news when they started the Pfiser jab that people had reactions
people who had allergies should NOT take it
The effectiveness of the Pfizer jab is much better than the AZ jab. The allergy thing refers to having a reaction to things like the annual flu jab. It's the 'solution' that the active component is 'dissolved' in that often causes the reaction, rather than the active component itself. And if you're allergic to the Flu jab, then you're equally likely to be allergic to the AZ jab.
The question about blood thinners is because it's possible the injection site may bleed and/or bruise. My dad is on Apixiban, which is a blood thinner, and the doctor wasn't at all worried about him having the Pfizer.
In short, if my mum were offered the Pfizer jab I'd want her to take it unless there were very good reasons why not.