Are all 3 shots of the Pfizer Covid vaccine the same?

[yungman]

TL;DR

Just want to know

Like the name, are all 3 shots of Pfizer Covid vaccine identical in composition or they are different formula following the mutation of the virus?

I took all 3 shots, just curious whether it's more of the same.

 

[atyy]

Yes, all 3 shots of Pfizer are exactly the same in amount and composition.

 

[jim mcnamara]

The term used is 30-30-30 for the Pfizer dose of 30mcg. Moderna uses less in the "booster" or third shot than in the first two. So, 100mcg in the first two, 50mcg in the third -- or 100-100-50.