Chills with no fever; Cramping in legs; super tired with no energy; Body aches; tiredness/Feeling super tired with no energy; This is a spontaneous report from a contactable consumer. This consumer (patient) reported for self that the 45-year-old female patient who receive first dose of bnt162b2 (BNT162B2, PFIZER-BIONTECH COVID-19 VACCINE, Batch/lot number: EH9899), via an unspecified route of administration on Saturday (02Jan2021) at single dose (once by injection in the right arm) for covid-19 immunisation. Medical history included ongoing Hypothyroidism from 2008. Concomitant medications included levothyroxine at 75 ug ongoing from 2008 for Hypothyroidism. Medical Professional and told by her work that she could get it because contact with COVID patients. The consumer calls for information about if the side effects she is experiencing after the administration of the COVID-19 vaccine will last for more days. The consumer reported tiredness and other side effects to DSU. A Consumer calls for information about if it would be appropriate the second dose of the COVID-19 vaccine is not administered considering that she had adverse reactions. Consumer calls for information about if the second dose of the COVID-19 vaccine would cause her more side effects than the first one. Received the vaccine on Saturday, 02Jan2021. The day she got it she did not feel anything at all. She was completely fine. She did not even have pain at the injection site. The next day, on Sunday she started feeling super tired with no energy, had body aches, and cramping in legs from 03Jan2021. She has had these for the past 3 days now. She also had chills with no fever from 03Jan2021 to 05Jan2021. She took Tylenol for the first 2 days, but it did not help her at all. She is feeling a little better today, but not much. Her question is, how long will these side effects last? Tylenol: She says it did help a little bit. She think she would just sleep because she was uncomfortable. The Tylenol just did not make her symptoms go away completely. LOT/Batch: AA46487, EXP: Apr2022 UPC: The consumer says the number under the barcode is: 5187536. Feeling super tired and body aches: Has improved about 20%. She says these are all medically significant as she is not able to do what she was able to do before getting the vaccine. She is super tired with no energy and she is confined to her bed most of the time. The consumer confirms this is her first dose of the COVID Vaccine. She thinks she got the standard dose. Vaccine card does not have the expiration date or NDC written on it. Unknown causality. She said that she could be positive for COVID. She is unsure. The outcome of the event Chills with no fever was recovered. The outcome of the event Cramping in legs was not recovered. The outcome of the other events was recovering.; Sender's Comments: Based on the current available information and the plausible drug-event temporal association, a possible contributory role of the suspect product BNT162B2 to the development of  reported events cannot be totally excluded.  The case will be reassessed if additional information becomes available.  The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to Regulatory Authorities, Ethics Committees and Investigators, as appropriate.