Started getting sweats so bad and almost passed out; Started getting sweats so bad and almost passed out; tired; temperature reached to over 100; heart rate was 120 to 130; Light headed; still feels weak; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) for a Pfizer sponsored program. The reporter is the patient.  A 75 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 27Sep2021 (Lot number: FC3184, Expiration Date: Oct2021) at the age of 75 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "High blood pressure", start date: 2007 (ongoing), notes: checked blood pressure and it was high. Caller was diagnosed with high blood pressure 10 years ago.; "Chronic obstructive pulmonary disease", start date: 2007 (ongoing). Concomitant medication(s) included: LOSARTAN taken for hypertension (ongoing); FLU VACCINE VII, administration date Sep2021. Vaccination history included: Bnt162b2 (Dose 2, lot: EN6204, Expiration: Jun2021 , NDC: Unknown , Route of administration: left arm, Time the Vaccination Was Given: in morning about 09:00-09:30), administration date: 19Mar2021, when the patient was 74 years old, for COVID-19 Immunisation, reaction(s): "Light headed", "Tired"; Bnt162b2 (Dose 1, Lot: EN6203, Expiration: Jun2021, NDC: Unknown , Route of administration: Left arm, Time the Vaccination Was Given: noon), administration date: 26Feb2021, when the patient was 74 years old, for COVID-19 Immunisation. The following information was reported: DIZZINESS (non-serious) with onset 27Sep2021, outcome "not recovered", described as "Light headed"; HYPERHIDROSIS (non-serious), PRESYNCOPE (non-serious) all with onset 29Sep2021 08:00, outcome "recovering" and all described as "Started getting sweats so bad and almost passed out"; FATIGUE (non-serious) with onset 27Sep2021, outcome "unknown", described as "tired"; PYREXIA (non-serious) with onset 27Sep2021, outcome "recovered" (30Sep2021), described as "temperature reached to over 100"; HEART RATE INCREASED (non-serious) with onset 27Sep2021, outcome "recovered" (01Oct2021), described as "heart rate was 120 to 130"; ASTHENIA (non-serious) with onset Sep2021, outcome "not recovered", described as "still feels weak". Relevant laboratory tests and procedures are available in the appropriate section.  Additional Information: The caller received the booster dose Pfizer Covid Vaccine on Monday, 27Sep2021 and was still feeling effects. After the caller received the booster dose Pfizer Covid Vaccine, he has been light-headed, tired, temperature reached over 100, heart rate was 120 to 130. Everything came down but the caller still feels bad now 5 days after receiving the booster dose Pfizer Covid Vaccine. The caller would like to know why he was still feeling effects 5 days after receiving the booster dose Pfizer Covid Vaccine. Are the effects the caller was feeling from the booster dose Pfizer Covid Vaccine? The caller's partner is debating about receiving the booster dose Pfizer Covid Vaccine. When the caller's partner received the booster dose Pfizer Covid Vaccine, the partner's blood pressure went up to 200. Vaccination Facility Type: withheld inside withheld. Vaccine Administered at Facility: NO. History of all previous immunization with the Pfizer vaccine considered as suspect (or patient age at first and subsequent immunizations if dates of birth or immunizations are not available): Vaccine Name: Pfizer Covid Vaccine. Additional Vaccines Administered on Same Date of the Pfizer Suspect If applicable, list all vaccines administered on same date with the Pfizer vaccine considered as suspect: No. Two weeks before receiving booster dose Pfizer Covid Vaccine, the caller received the flu vaccine. AE(s) did not require a visit to Emergency Room/Physician Office, only had a phone call. Prior Vaccinations (within 4 weeks) If applicable, list any other vaccinations within four weeks prior to the first administration date of the suspect vaccine(s): Vaccine Name: Caller received a flu vaccine two weeks prior to receiving Booster dose Pfizer Covid Vaccine. NDC/lot expiration: Flu vaccine: Caller is unable to provide this information. AE(s) following prior vaccinations: Caller states he had a little bit of a reaction from the flu vaccine but nothing serious.  Caller previously stated unable to provide NDC/lot/expiration for flu vaccine. Family Medical History Relevant to AE(s): No the caller stated his parents and brother are both gone. Relevant Tests: None. Investigation Assessment: No.  Follow-up attempts are completed. No further information is expected.