Volunteers face 'severe hangover', headache and pain after getting Pfizer COVID vaccine shot.
Pfizer COVID Vaccine Cause Severe Hangover, Headache And Pain In Volunteers
Around 43,500 people in six countries have taken part in the phase three trial run by the pharmaceutical giant and its partner BioNTech.
After Pfizer's claim that the COVID-19 vaccine is more than 90% effective based on initial trial results, a few volunteers said that they suffered side effects comparable to a flu jab...
