Side Effects Of Covid Booster Diarrhea. However, diarrhea was one of the top 10 most common side effects reported among those who got the pfizer vaccine. Pain, redness and swelling at the.
One of these side effects does fall in the gi category: A sore arm from the injection; According to the guardian, 11.1 percent of people reported diarrhea after their first dose from pfizer, and 10.4 percent reported the.