dizziness/light headed; tired and slept a lot more than usual; diarrhea; feels out of sorts; slept a lot; felt sick; had some muscular aches; couldn't walk because she kept getting dizzy; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 73 year-old female patient received bnt162b2 (BNT162B2), administration date 06Aug2021 (Lot number: EWO183) at the age of 73 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "Antibiotic allergy" (unspecified if ongoing); "The worst reaction she had was to CT scan contrast dye/she was allergic to everything" (unspecified if ongoing); "Does not feel good" (unspecified if ongoing); "Stomach ache" (unspecified if ongoing); "does not take medicine well" (unspecified if ongoing); "mouth has swollen a few times" (unspecified if ongoing). Concomitant medication(s) included: TRIAMTERENE taken for blood pressure abnormal; LOSARTAN taken for blood pressure abnormal; HCTZ taken for blood pressure abnormal. The following information was reported: DIZZINESS (non-serious) with onset Aug2021, outcome "not recovered", described as "dizziness/light headed"; FATIGUE (non-serious) with onset Aug2021, outcome "unknown", described as "tired and slept a lot more than usual"; DIARRHOEA (non-serious) with onset Aug2021, outcome "unknown", described as "diarrhea"; FEELING ABNORMAL (non-serious) with onset Aug2021, outcome "unknown", described as "feels out of sorts"; SOMNOLENCE (non-serious) with onset Aug2021, outcome "unknown", described as "slept a lot"; ILLNESS (non-serious) with onset Aug2021, outcome "unknown", described as "felt sick"; MYALGIA (non-serious) with onset Aug2021, outcome "unknown", described as "had some muscular aches"; GAIT DISTURBANCE (non-serious) with onset Aug2021, outcome "unknown", described as "couldn't walk because she kept getting dizzy". The events "dizziness/light headed", "tired and slept a lot more than usual", "diarrhea", "feels out of sorts", "slept a lot", "felt sick", "had some muscular aches" and "couldn't walk because she kept getting dizzy" were evaluated at the emergency room visit. Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of dizziness.  Additional Information: She got the first shot of Pfizer on 06Aug2021. She told them she was allergic to everything. She is allergic to antibiotics and does not take medicine well. They said she would sit for 30 minutes instead of 15 minutes. That is what she did and was fine. She was very worried. As the patient was walking out the nurse was walking her to the parking lot. Caller got very dizzy the nurse grabbed her. Caller kept on walking, but then could not walk because she kept getting dizzy. Caller did not want to be checked out. The nurse had to get a wheelchair. She had to go through the ER to get out of the building. When she stood up she got dizzy so the nurse insisted that caller go to ER and get checked out. The doctor took blood test and asked caller about dizziness. Caller was given Meclizine for dizziness and the doctor said her blood was ok. She slept a lot. By the time they got home on 06Aug2021 she wound up sleeping from 8PM to 10AM. She got up and got food and then went back to sleep and slept until 6PM that night. By Sunday she did not feel so tired. She just feels out of sorts. Monday she went to work and had diarrhea. She had diarrhea from Monday through Thursday and she still feels dizzy every once in a while. Friday through Sunday she had no diarrhea, but still lightheaded and felt sick. Yesterday the diarrhea started again. She is going to bathroom an awful. She got up at 7AM today and has gone 4 times. She does not feel good. Her whole body does not feel good. She has no fever or cough. She just wanted to know if that is something people have had. It has been 10 days. she takes very little medicine like this because she is afraid. Time the Vaccination Was Given: It had to be 12: 30 PM because they closed at 1:00PM. They were closing and that is when she walked outside and 1:00 PM is when she started feeling dizzy. Vaccination Facility Type was hospital. Following prior vaccinations had not been AEs. The worst reaction she had was to CT scan contrast dye. She blew up and they had to give her Benadryl and shots. That happened years ago and she does not have lot number for what she was given or the contrast dye. It was ionic contrast for the cat scan dye. Her mouth has swollen a few times and she is not sure why. She must have eaten something. It happened once after Japanese food. That is when the doctor gave her the EpiPen since she was not sure what did it. She has never taken a flu shot or pneumonia shot. She stays away from all of them because she is scared of side effects. They were pushing her to take this one. When she first started taking blood pressure medication she had tried different things and got cough and all kinds of things. Then the doctor said to try two of them to get the combination.   No follow-up attempts are possible. No further information is expected.