her nerves pounding all throughout her body/the nerves in her whole body were just aggravated; she was a little shake and kind of weak; a headache; a stiff neck/Her neck felt stiff; Heart beating really fast/Her heart was pounding she could hear it in her ears; a blood pressure of 174/78/Her blood pressure was 174/78; she was a little shake and kind of weak; her head felt heavy; her whole body felt heavy; She had ringing in her ears; This is a spontaneous report from a contactable consumer (patient). An 83 years old female patient received 1st dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot Number: EN6202), via an unspecified route of administration on 02Mar2021 at age of 83 years old at single dose for covid-19 immunisation. Medical history included hip surgery a few months ago and she was still kind of stiff and sore. Concomitant medications included lisinopril at low dose 10 mg once daily taken for blood pressure abnormal about 10 years ago; clopidogrel bisulfate (PLAVIX) taken for transient ischaemic attack from 2012 (she believed it was a around that time); acetylsalicylic acid (ASPIRIN LOW) at low dose (she began taking this before the Lisinopril so it has been several years).The patient mentioned that she received her 1st dose of the vaccine on 02Mar2021 and everything was fine that day and the day after. At late in the day on 04Mar2021, she experienced a lot of problems which she mentioned was the worst experience in her life. She was 99% sure it was from the vaccine because she didn't experience anything like that before getting the vaccine. She mentioned that she experienced side effects all night like her heart beating really fast, a headache, a stiff neck, her nerves pounding all throughout her body, and a blood pressure of 174/78. She mentioned that it was the worst she's felt so far as compared to going to the ER, as she's experienced before. She did not go to the ER as she could not drive herself and she was living alone. She mentioned that she better the next day although it was not totally gone, she was a little shake and kind of weak. As of calling, she said that she was feeling okay and better than yesterday (07Mar2021) in which the effects were still present. She mentioned that it was horrible, very scary, she was very ill, very uncomfortable, really bad, and didn't want to go through that again. She didn't know if she would make it through the night. She was asking for what to do and asking if there needed to be an adjustment for her dose because she was a very small person. She didn't want to have the 2nd shot if she went through that again. It was the worst experience of her life. She was not sure what to do now about her second shot. She had the first shot 02Mar2021 and everything was fine, 03Mar2021 she was okay but on 04Mar2021 she had, by night time, she had a lot of scary things that had never happened to her before. Her heart was pounding she could hear it in her ears. Her head, her neck felt stiff and her head felt heavy, her whole body felt heavy and like the nerves in her whole body were just aggravated, it was hard to explain. She had ringing in her ears. Her blood pressure was 174/78 and she was just afraid to have the second shot, it was scary, it was really bad. She was wondering if the amount of the vaccine was too much for her.  She confirmed it was the evening 04Mar2021 when all this began. She said all of this was pretty well recovered at this point. She said the day after that happened, she was shaky but today (08Mar2021) she was fine. She did not know what it would be medications they are looking for but she was on normal medicine for old people she guesses. This was so bad that she really was not going to take the second dose unless they can tell her if she should or that they should give her less or something like that. The outcome of events was recovered in Mar2021.