My blood pressure is now uncontrollable; I believe I had Covid the 1st week in Jan2021. That week I also received my Pfizer booster.; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program (005570). The reporter is the patient.  A female patient received bnt162b2 (BNT162B2), administration date Jan2021 (Batch/Lot number: unknown) as dose number unknown (booster), single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Covid-19 vaccine (dose 1, Manufacturer Unknown), for COVID-19 Immunization; Covid-19 vaccine (dose 2, Manufacturer Unknown), for COVID-19 Immunization. The following information was reported: OFF LABEL USE (non-serious) with onset Jan2021, outcome "unknown", described as "I believe I had Covid the 1st week in Jan2021. That week I also received my Pfizer booster."; BLOOD PRESSURE ABNORMAL (non-serious), outcome "unknown", described as "My blood pressure is now uncontrollable". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: Customer Verbatim: I believe I had Covid the 1st week in Jan2021. That week I also received my Pfizer booster. Since then I have had to go to the ER twice. My blood pressure is now uncontrollable. I have never had hypertension before. My BP is in the 150 Ts and 160 Ts over 80 Ts. My doctor has ran tests but so far has everything has come back normal other then my BP. Is there anything on your end you might suggest before I stroke or have a heart attack. Thanks. The lot number for bnt162b2 was not provided and will be requested during follow up. PQC Details: Product: COMIRNATY Question: Outbound Callback on 21Feb2022 at 10:51 AM ET- Disclaimer provided. Forwarded as an Adverse Event and Medical Inquiry on 19Feb2022 Reporter provided verification of contact address on 18Feb2022 Customer Verbatim: I believe I had Covid the 1st week in Jan2021. That week I also received my Pfizer booster. Since then I have had to go to the ER twice. My blood pressure is now uncontrollable. I have never had hypertension before. My BP is in the 150Ts and 160Ts over 80Ts.My doctor has ran tests but so far has everything has come back normal other then my BP. Is there anything on your end you might suggest before I stroke or have a heart attack. Thanks. Response: Spoke from attached document. A review of the Prescribing Information for <Pfizer COVID-19 Vaccine> did not find information regarding high blood pressure, as the Prescribing Information does not include all adverse reactions that have been reported or that may occur, please continue with your doctor, as he is in the best position to assess and advise you, because he is most familiar with your medical condition, clinical history, how your treatment has been conducted and any relevant information to your specific case. Product: COMIRNATY Question: Caller asked when the vaccine would "wear off"? Response: Spoke from attached document: The duration of protection (how long you will be protected) against COVID-19 is currently unknown.  The lot number for the vaccine, [BNT162B2], was not provided and will be requested during follow up.