A member asked:

I had the first pfizer vaccine yesterday morning at 11 am. how long does it take before side effects usually appear? whats the longest they can take to appear?

6 doctors weighed in across 2 answers

You may not have any side effects. When people get them it is usually on the first or second day. Do take the second dose, as scheduled. Wish you good health!

Answered 6/11/2021

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Dr. Christine Hom answered

Specializes in Pediatrics

Side effects most commonly occur in the first minutes after the vaccine, which is why you are asked to wait 15 or 30 minutes. Many people have no side effects at all with COVID vaccine. At 48 hours any side effects should have appeared.

Answered 6/19/2021

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