booster shot; its kind of stroke'; nauseous; lack of balance; I went to bed for 12 hours before I could even get up and function; I am speeding up a clear substance looks like white blood cell or something ''flams'' it comes up all the times; I got terrible adverse effect; I got definitely ill on both of the shot, terribly ill; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  An 80 year-old male patient received bnt162b2 (BNT162B2), administration date Nov2021 (Lot number: 330258D) as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "Enlarged prostate" (unspecified if ongoing). Concomitant medication(s) included: TAMSULOSINE HCL taken for prostatomegaly. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE.), administration date: 06Mar2021, when the patient was 79 years old, for COVID-19 immunization, reaction(s): "no adverse event from this first shot"; Bnt162b2 (DOSE 2, SINGLE.), administration date: 2021, for COVID-19 immunization, reaction(s): "Nauseous"; Bnt162b2 (DOSE 2, SINGLE., Verbatim: I had the same reaction to Pfizer 2 shot, I have lack of balance), administration date: 2021, for COVID-19 immunization, reaction(s): "lack of balance"; Bnt162b2 (DOSE 2, SINGLE., Verbatim: I had the same reaction to Pfizer 2 shot, I have essentially I went to bed for 12 hours before I can even get up and function), administration date: 2021, for COVID-19 immunization, reaction(s): "I went to bed for 12 hours before I can even get up and function"; Bnt162b2 (DOSE 2, SINGLE., Verbatim: I had the same reaction to Pfizer 2 shot, I have its kind of 'stroke'), administration date: 2021, for COVID-19 immunization, reaction(s): "its kind of stroke"; Bnt162b2 (DOSE 2, SINGLE., Verbatim: number 2 Pfizer I am speeding up a clear substance looks like white blood cell or something 'flams' it comes up all the times), administration date: 2021, for COVID-19 immunization, reaction(s): "I am speeding up a clear substance looks like white blood cell or something ''flams'' it comes up all the times".  The following information was reported: IMMUNISATION (medically significant) with onset Nov2021, outcome "unknown", described as "booster shot"; CEREBROVASCULAR ACCIDENT (medically significant) with onset 2021, outcome "unknown", described as "its kind of stroke'"; NAUSEA (non-serious) with onset 2021, outcome "unknown", described as "nauseous"; BALANCE DISORDER (non-serious) with onset 2021, outcome "unknown", described as "lack of balance"; SLEEP DISORDER (non-serious) with onset 2021, outcome "unknown", described as "I went to bed for 12 hours before I could even get up and function"; WHITE BLOOD CELL COUNT ABNORMAL (non-serious) with onset 2021, outcome "unknown", described as "I am speeding up a clear substance looks like white blood cell or something ''flams'' it comes up all the times"; ILLNESS (non-serious) with onset 2021, outcome "unknown", described as "I got terrible adverse effect; I got definitely ill on both of the shot, terribly ill". The patient underwent the following laboratory tests and procedures: white blood cell count: (2021) abnormal, notes: White blood cell count Abnormal. Therapeutic measures were not taken as a result of cerebrovascular accident, nausea, balance disorder, white blood cell count abnormal, illness. Therapeutic measures were taken as a result of sleep disorder. The consumer want to report an adverse effect from your Pfizer booster shot and actually your Pfizer number 2, I got definitely ill on both of the shot, terribly ill. While confirming the product as Pfizer COVID-19 Vaccine, Consumer stated, "Yeah the booster shot which I had last month I got terrible adverse effect from it and I had the same reaction to Pfizer 2 shot, I have nauseous, lack of balance, essentially I went to bed for 12 hours before I can even get up and function, its kind of 'stroke' (Not Clarified)." Concomitant medication: Consumer stated, no unless you wanna consider Flomax medication. Its for enlarged prostate there is a technical name for it I can read it off here, Tamsulosin HCL. Treatment for adverse event: Consumer stated, no I didn't take any treatment for that except sleep. Consumer stated, no but I have one question I don't know if you can answer or not. Is the side effect from this drug, this shot booster and number 2 Pfizer I am speeding up a clear substance looks like white blood cell or something 'flams' it comes up all the times. I have 2 friends that are having the same condition and we are wondering if this related to this COVID shot. It seems kind of funny that all of us are having the same issue.  Follow-up attempts are completed. No further information is expected.