This is a spontaneous report from a contactable consumer or other non-health care professional (patient).  A 83-years-old male patient received BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation: Solution for injection, Batch/Lot number FF2588), via an unspecified route of administration in Deltoid Right on 25Sep2021 12:30 PM (at the age of 83-years-old) as DOSE 3 (BOOSTER), SINGLE for covid-19 immunization. Medical history included high blood pressure, blood cholesterol, diabetes mellitus from 1990 to an unknown date He has been a diabetic since 1990s, neuropathy (It was nerve damage). Patient previously received BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Batch/Lot number EL9267), via an unspecified route of administration, administered in Deltoid Right on 15Feb2021 as DOSE 1, SINGLE and BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Batch/Lot number EN6206), via an unspecified route of administration, administered in Deltoid Right on 09Mar2021as DOSE 2, SINGLE for covid-19 immunization. Historical vaccine include flu shot on unspecified date in Sep2021. Concomitant medications included verapamil (VERAPAMIL) taken for High blood pressure, He has had dizziness the entire time taking Verapamil and he has been on it for quite a few years; ezetimibe (EZETIMIBE) taken for cholesterol; insulin taken for diabetes. Patient reported that He had the third vaccine on Saturday. He was 83 years old. He was having some side effects that are on the list. He want to report those effects. Patient had taken the two shots in Feb2021 and on 09Mar2021. With those he didnt experience anything. This time he was bother by what was occurring. On the list of side effects that can occur he has got dizziness and weakness on 26Sep2021. He does had dizziness, but he takes a medication for high blood pressure and it may be between the two. He also had injection site pain, tiredness, and headache on 26Sep2021. He especially feels flush from face up like he has a fever on 27Sep2021. He hasn't taken his temperature. He has nausea and a sense of not feeling well. He was 83 and doesn't feel well anyway. Patient reported that He noticed it on Sunday, 26Sep2021. He had the shot done around 12:30PM. He felt the dizziness when he woke up. He didn't feel anything when he was sleeping. The dizziness was still ongoing. He does suffer from dizziness and was trying to rule it out. Usually he can deal with dizziness, but now he can tell it was more dizziness and he was off balance. He noticed weakness more today than yesterday. It was a little more, but not too bad where he can't perform daily task. injection site pain started 26Sep2021. It was ongoing and persisting. Patient felt tiredness it this morning. He doesn't sleep well so that could be attributed to it, but he was not sure. Patient woke up with a headache on 26Sep2021 and still has it now. Outcome of event right now it was a dull feeling. It was not a pounding headache. Feels flush from face up like he has a fever he noticed it this morning, 27Sep2021. Right now his face feels a little warm. It was like 90 degrees today. Patient noticed nausea today, 27Sep2021. He had lunch and still feels it. It doesn't feel normal, but it was not too bad. Outcome of event it was an annoying feeling there. Nothing major. It was not uncomfortable, but he notices it there. Sense of not feeling well started yesterday. He was dragging. This has happened before because of his age he guesses. Patient had diarrhea once today, 27Sep2021. Patient reported that He started taking Zetia a month ago for cholesterol. They took him off Pravastatin because of muscle pain. He was still having muscle pain on Zetia. Reporter clarified that he is taking Ezetimibe 10mg once daily which was the substitute for Zetia. It was for cholesterol. He started it a month ago. He was on Pravastatin before that. He still has some left. Pravastatin 40mg once daily by mouth. It is in a white botte from the company. he had blood work done not for this, but for the change of medication from Pravastatin to Zetia about a week ago. He was assuming it will go away in two weeks. This was to build antibodies. Patient had not attended Emergency Room and physician Office for the events reported. The outcome of the events dizziness, injection site pain and feels flush from face up like he has a fever was not recovered and for weakness, tiredness, headache, nausea, sense of not feeling well, diarrhea, third dose was given on 25sep2021, is off balance was unknown.  Follow-up attempts are completed. No further information is expected.