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

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All three doses of the Pfizer COVID vaccine are identical in composition, each containing 30 micrograms (mcg) of the active ingredient, referred to as 30-30-30. In contrast, the Moderna vaccine has a different dosing schedule, with the first two doses at 100 mcg each and the booster dose at 50 mcg, noted as 100-100-50. This indicates that while Pfizer maintains the same formula across all doses, Moderna adjusts the amount in the booster shot.
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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.
 
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Yes, all 3 shots of Pfizer are exactly the same in amount and composition.
 
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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.
 
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