This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient. A 71 year-old female patient received bnt162b2 (BNT162B2), administered in arm right, administration date 22Feb2021 (Lot number: EN6200) at the age of 71 years as dose 1, single for Covid-19 immunisation. The patient had no relevant medical history. The patient took concomitant medications. The following information was reported: Fatigue(non-serious) with onset 22Feb2021, outcome "recovered" (2021), described as "she was falling asleep in the car and it almost caused her to get in an accident so she pulled over and had to sleep for a while and then drive home". Relevant laboratory tests and procedures are available in the appropriate section. Additional Information: Caller states she is calling about the Pfizer Booster and just needed to find out whether or not after taking the booster shot she immediately had side effects and should stay an hour into it and since this time she has continued to have side effects and not feel the same; states her friends and family asked if she has made contact with Pfizer about whether or not her side effects are related and could they do that as she is not a medical professional. Patient details: Caller asked if agent was located in "withheld" and states she is not a HCP but is a mental health professional; caller declined to provide her ethnicity. HCP information: Caller declined to provide HCP information and states she would not see her HCP for anything and is getting ready to change HCPs. States she took the Pfizer Covid booster dose on a Sunday morning and at 9-10:00am her husband and she both did that at withheld and her symptoms did not happen immediately but she came home 2-3 miles from her house and by the time she got to the house which may be 10-15 minutes from the time she was administered the booster shot she immediately felt like someone had poured water on the wicked witch and she withered away and felt drained immediately and was very extremely tired and it was like she immediately dropped like a drug in her face and it was a drug and told her husband she was so tired. States she has had heavy breathing and they told her to keep taking her nebulizer and she is on that but they said to continue to take the nebulizer and she is maybe having a slight reaction to the weather and maybe pollen is high so she overlooked that. Caller states the fatigue continued and she rests and has been resting since the shot caused her to sleep regularly and she is not herself and her daughter said recently since the Pfizer Covid shot you have not been yourself and maybe this is right she has not been herself and knows that and when she first got the vaccine everything else was dwindling and moves slower at a slower pace like a blocker was administered. Caller states she had the 1st dose of the Pfizer Covid vaccine on 22Feb2021 at withheld with lot EN6200 and her patient card also has withheld written on it and the 2nd dose was administered on 16Mar2021 with lot EN6206 and the booster dose was administered on 03Oct2021 with lot FF8839; states all three doses of the vaccine were administered into her top of the right arm; states her patient card has no expiry dates or numbers written on it and she had the booster dose administered at withheld. Follow-Up (28Dec2021): Follow-up attempts are completed. No further information is expected. No follow-up attempts are possible. No further information is expected.