a little bit of a fever; a little bit of high blood pressure; tried to go to the bathroom, collapsed on the floor; Third dose: 30Aug2021; Third dose: 30Aug2021; not very hungry; he was cold all afternoon, he was cold at dinner, and then went to bed because he was so cold at 18:00; This is a spontaneous report from a contactable consumer (patient). A 88-years-old male patient received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot number, Expiration date), via intramuscular route of administration, administered in right arm (muscle of the right arm) on 30Aug2021 at 12:30 hours as dose 3, single (at the age of 88-years-old) for COVID-19 immunisation. The patient's medical history included ongoing cholesterol (when he was diagnosed, it had been some while), ongoing blood pressure (when he was diagnosed, it had been some while) and COVID-19 (was in the hospital for 8 days and he can do anything to keep from going back he was going to do, due to which patient had the vaccine and stated that if the doctor says to take another booster shot, he was going to take another booster shot) from an unknown date to unknown date. The patient's concomitant medications were not reported. Historical vaccine included patient received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot number, Expiration date), via an unspecified route of administration, on an unspecified date as dose 1, single (at the age of 87-years-old) for COVID-19 immunisation and had no reaction and received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot number, Expiration date), via an unspecified route of administration, on an unspecified date (back in Dec2020 or early Jan2021) as dose 2, single (at the age of 87-years-old) both for COVID-19 immunisation and after second dose patient had legs were like rubber, he couldn't walk, couldn't get to the bathroom. Patient had no additional vaccines administered on same date of the Pfizer suspect. Patient had no prior vaccinations (within 4 weeks). On 30Aug2021, patient was cold all afternoon, not very hungry, he was cold at dinner, and then went to bed because he was so cold at 18:00 hours, and he slept all night and then on 31Aug2021, morning when he tried to go to the bathroom, he collapsed on the floor. At the place he lives, they had doctors and nurses there and the nurses got him up and then they sent two more nurses there later and they diagnosed him with a little bit of a fever and a little bit of high blood pressure, not enough to worry about, and she said it would all be gone by tomorrow. Patient would say he was a lot better as he goes along, he was not going to get up out of bed today (31Aug2021), but he was feeling a lot better, he was not cold anymore. Patient had no emergency room and physician Office visit for all the events. No relevant tests were performed. Patient stated that maybe he had a reaction to antibodies. The patient underwent lab tests and procedures which included SARS-COV-2 test and result was positive on an unspecified date. The outcome of all the events was recovered on 31Aug2021 except extra dose administered and off label use.  The lot number for the vaccine, BNT162B2, was not provided and will be requested during follow up.