Fell asleep after first dose of the Covid Vaccine; Fatigue, low energy; Fatigue, low energy; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 73 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 23Mar2021 12:45 (Lot number: EP7534) at the age of 73 years as dose 1, single for covid-19 immunisation. The patient had no relevant medical history. The patient's concomitant medications were not reported. Past drug history included: Methylprednisolone, reaction(s): "did not work". Vaccination history included: Flu/quad 4 flu vaccine (had the flu for 5 weeks after getting the flu vaccine), administration date: 21Oct2020, reaction(s): "FLU". The following information was reported: FATIGUE (non-serious), ASTHENIA (non-serious) all with onset Mar2021, outcome "not recovered" and all described as "Fatigue, low energy"; SOMNOLENCE (non-serious) with onset 23Mar2021, outcome "unknown", described as "Fell asleep after first dose of the Covid Vaccine". The event "fatigue, low energy" and "fatigue, low energy" was evaluated at the physician office visit. Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: The patient wanted to travel and live her life, the people she socializes with were super freaked out about the virus. The patient did not want to be socially isolated and felt pressured into getting the vaccine. Patient says she usually has a lot of energy. patient Says after both vaccines she fell asleep. States it is not normal for her to lay down at 1300 and sleep until 1600-1700 in the evening. further states that when she was an infant, got her 6-month-old shots, the patient's mother thought the patient had died as the she did not move for 2 days and 2 nights. Reporter denies any medical conditions, medications, labs, testing, or treatments relevant to these events. States that she had annual lab work in the middle of Jan 2021 and the results were amazing. States she is healthy and is not on any medications or anything.The patient has always been scared of vaccines since she was told about the shot, she got at 6-month-old. The patient's mother did not get the patient anymore vaccines after that out of fear. The patient does not know what vaccination she got at that appointment, just that it was 6-month shots. No further information about the vaccine was known. While reporter was looking for her Flu vaccine information she found something related to Methylprednisolone; stated that the doctor gave her that and it did not work. A ringtone was heard in the background and reporter stated that she has to go to take another call in about 5 minutes.  The patient previously took methyl prednisolone, and it did not work. No further information obtained related to Methylprednisolone. The patient was healthy and was not on any medications or anything. The patient received no additional vaccines administered on same date of the Pfizer suspect. The patient didn't receive any other vaccines within 4 weeks prior to the COVID vaccine.Investigation Assessment was no.Emergency Room visit was no and Patient visited Physician Office.Adverse Event  had the flu for 5 weeks after getting the flu vaccine.Patient's Medical History (Including any illness at time of vaccination was none. Stated she knows she got the flu from the Quad 4 Flu vaccine got on 21Oct2021. Stated  had the product details but was not able to find the NDC, Lot Number or expiration date during the call.  No follow-up attempts are possible. No further information is expected.