Didn''t feel well, put her in bed, not one that goes to bed; pitched ringing in her left ear/tinnitus; states she was only sick for about 1 day; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program (159558). The reporter is the patient.  A 76-year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 29Sep2021 09:45 (Lot number: FE3592) at the age of 76 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "she had a filling done at the dental office" (unspecified if ongoing). There were no concomitant medications. Vaccination history included: Bnt162b2 (First Dose: 23Jan2021 Lot: EK9231, Reaction/event as reported by primary source: First Dose: Sore Arm), administration date: 23Jan2021, when the patient was 75 years old, for COVID-19 immunization, reaction(s): "First Dose: Sore Arm"; Bnt162b2 (Second Dose: 13Feb2021 Lot: EL9264, Reaction/event as reported by primary source: Second Dose: Sore Arm), administration date: 13Feb2021, when the patient was 75 years old, for COVID-19 immunization, reaction(s): "Second Dose: Sore Arm"; Flu shot, for flu, reaction(s): "red", "warm", "her arm was swollen". The following information was reported: MALAISE (non-serious) with onset 30Sep2021, outcome "recovered" (01Oct2021), described as "Didn''t feel well, put her in bed, not one that goes to bed"; TINNITUS (non-serious) with onset 30Sep2021, outcome "not recovered", described as "pitched ringing in her left ear/tinnitus"; ILLNESS (non-serious) with onset 2021, outcome "recovered", described as "states she was only sick for about 1 day". Therapeutic measures were taken as a result of tinnitus.  Additional information: Reporter stated, had her Covid Vaccine booster shot on 29Sep2021, and states she was only sick for about 1 day after the shot but she also developed tinnitus, ringing in the ears. Reporter stated, she had a filling done at the dental office but that was before her shot, she doesn't know if that has anything to do with it or not. Reporter stated she had an appointment 30Nov2021 with an audiologist because they want her to come in to do a hearing test. Reporter stated she had never had a problem with hearing, just the ringing. Reporter stated, probably 20 years or more ago she had a reaction to a flu shot, a high dose flu shot. Caller states her arm was swollen, warm and red. Reporter stated, the doctor gave her a shot to counteract it, probably antihistamine. Reporter stated, since then, she has gotten a flu shot every year with no reaction. The patient received treatment with ear dry and debrox; reporter stated those didn't seem to help. Reporter stated was a consumer who stated she has previously reported a potential side effect from the booster dose of Pfizer Biontech COVID19 vaccine on 29Sep2021. Reporter stated had tinnitus or high-pitched ringing in her left ear which has been going for 6 weeks. She had gone to the doctor since she gave the report and was given Prednisone and Xysal to see if that will help. Prior Vaccinations (within 4 weeks) was none.  Follow-up attempts are completed. No further information is expected