Booster; Trying to get up and back in bed I could not, I lost all my strength; I could not lift my 82-Year-old 230 pound body; I lost my balance and fell out of bed; I lost my balance and fell out of bed; I could not lift myself off the floor; my arms and legs were too weak; my hands and arms began to shake; This is a spontaneous report from a contactable consumer (patient). An 82-year-old male patient received third dose of bnt162b2 (BNT162B2 Formulation: solution for injection, Batch/Lot number was not reported), via an unspecified route of administration on 14Oct2021 (at the age of 82-year-old) as dose 3 (booster), single for covid-19 immunisation. The patient medical history was not reported. Concomitant medications included vitamin c [ascorbic acid] (VITAMIN C) from 2010 to an unspecified stop date; folic acid (FOLIC ACID) from 2010 to an unspecified stop date; amlodipine (AMLODIPINE) from 2019 to an unspecified stop date; biotin (BIOTIN) from 2021 to an unspecified stop date; metoprolol (METOPROLOL) from 2019 to an unspecified stop date; pravastatin (PRAVASTATIN) from 2016 to an unspecified stop date; tamsulosin (TAMSULOSIN) from 2001 to an unspecified stop date; levothyroxine sodium (LEVOTHYROXINE) from 2020 to an unspecified stop date; amiodarone (AMIODARONE) from 2019 to an unspecified stop date; famotidine (FAMOTIDINE) from 2019 to an unspecified stop date; warfarin (WARFARIN) from 2019 to an unspecified stop date all taken for an unspecified indication; ascorbic acid, betacarotene, copper, tocofersolan, zinc (OCUVITE [ASCORBIC ACID;BETACAROTENE;COPPER;TOCOFERSOLAN;ZINC]) taken for prophylaxis from 2014 to an unspecified stop date. Historical vaccine included first dose of bnt162b2 on 25Feb2021 and second dose on 18Mar2021 (Batch/lot number: unknown) for covid-19 immunisation and had no problem with side effects of both shots. The patient received the booster shot the afternoon of 14Oct2021 and the patient had no immediate effect the rest of that day. In the middle of the night (Oct2021) when the patient got up to use the bathroom, while sitting on the stool, his hands and arms began to shake and was settled down when he got back in bed. The patient had no problem the next morning (15Oct2021) and he stayed in bed to rest. Later that evening the patient was in bed and dropped the TV remote off the bed. When the patient leaned over to get it and lost his balance and fell out of bed. On the same day on 15Oct2021, the patient was trying to get up and back in bed, but he could not, he lost all strength, and he could not lift his 82-Year-old pound body with arms or legs. The patient stated that usually, he can prop up on the side of the bed and stand up and he could not lift off the floor on 15Oct2021. The patient wife cannot lift the patient and she called daughter and son-in law and asked for help. They came over and arrived in about two hours. In the meantime, the patient wife gave a pillow and blanket so he could lay on the floor. he could not get up and stating his arms and legs were too weak (15Oct2021). The patient stated that his daughter and son-in-law arrived, they were able to pick the patient up off the floor and back in bed. They discussed the situation and decided to go to the hospital which was only 2.5 mile away. They called 911 and the EMS was there in a short time. The EMS checked the patient over and noted vital signs were okay. Shortly thereafter the ambulance arrived and loaded the patient up on the gurney and took to the hospital. At the hospital they ran a bunch of tests and could not find anything abnormal on an unknown date of Oct2021. They concluded that it was a bad side effect of the booster shot and kept the patient over night to observe if anything else may happen. The patient stated that did not know why the side effects came with the booster shot and they said no one else called about the side effects. It may be a conflict with one of the patient medications. Perhaps the people could determine if any of medications would conflict with the vaccine. The patient asked if there anything Pfizer can do about hospital bill and ambulance service as the doctors and nurses were saying it must have been a side effect of the booster shot, they could not find any other reason the body reacted the way it did. The patient was in the hospital for two days and was discharge on Sunday afternoon on 17Oct2021. The patient underwent lab tests and procedures which included laboratory test: could not find anything abnormal on Oct2021. The outcome of event hands and arms began to shake was resolved on an unknown date of Oct2021 and outcome of all other events was unknown.  The lot number for the vaccine BNT162B2 was not provided and will be requested during follow up.