Severe gastrointestinal issues; Severe gastrointestinal pains; The patient's stomach was hurting up to his chest, they thought it was acid reflux, it was severe/very intense stomach pains; The patient's stomach was hurting up to his chest; The patient's stomach was hurting up to his chest, they thought it was acid reflux, it was severe; patient lost a lot of weight like 7 pounds; This is a spontaneous report from a contactable consumer or other non hcp (patient's wife). A 65-year-old male patient of an unspecified age received second first dose bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Batch/Lot Number: EW0151, NDC, and expiration date unknown), via an unspecified route of administration, administered in arm left on 16Apr2021 (at the age of 64-year-old) at dose 2, single for covid-19 immunisation. Medical history included Blood pressure high (Verbatim: diagnosed in his early 40's), overweight, blood pressure. Concomitant medications included hydrochlorothiazide, losartan potassium (LOSARTAN/HYDROCHLOROTHIAZIDE) taken for blood pressure measurement; clonidine (CLONIDINE) patch taken for an unspecified indication, start and stop date were not reported. Additional Information for Concomitant Products clonidine patch: The patient changes the patch every week. It is a lesser dose than he originally started with. Patient previously received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Batch/Lot Number: ER2613, NDC, and expiration date unknown), via an unspecified route of administration on 26Mar2021 (at the age of 64-year-old) at dose 1, single for covid-19 immunisation. On 18May2021 the patient experienced severe gastrointestinal issues, severe gastrointestinal pains, the patient's stomach was hurting up to his chest, they thought it was acid reflux, it was severe/very intense stomach pains, the patient's stomach was hurting up to his chest and on an unspecified date in 2021 patient lost a lot of weight like 7 pounds. 55-year-old female and her husband, a 65-year-old male both experienced severe gastrointestinal issues after receiving their second dose on 16Apr2021 of the Pfizer Covid-19 Vaccine. The reporter also experienced a rash. The reporter's Dermatologist told her that things happen sometimes because you are old, but the reporter stated she is a pretty healthy person. Reporter is curious to know if other people reported these side effects after receiving the Pfizer Covid-19 Vaccine. The patient had severe gastrointestinal pains that didn't go away. They were very intense stomach pains. The patient had liver tests, an ultrasound of his pancreas, and elevated enzymes all tested. This went away and they don't know how or why. The patient's brother doesn't want to get the vaccine because of his reports. The patient's primary care provider said that this event could be related to high blood pressure and that the patient needs to lose weight. The patient lost a lot of weight like 7 pounds because he wasn't eating at the time of this event. Event: The patient's abdominal pain was probably mild before he said anything because he doesn't complain but the caller thinks it was 18May2021 when it started. The patient's stomach was hurting up to his chest, they thought it was acid reflux, it was severe. First Dose: Received 26Mar2021, lot ER2613, NDC, and expiration date unknown. Second Dose: Received 16Apr2021, lot EW0151, NDC, and expiration date unknown. The patient underwent lab tests and procedures which included on an unspecified date in 2021 blood test: unknown, Blood labs, colonoscopy: unknown, computerised tomogram: unknown, CT scan of his liver, endoscopy: unknown, hepatic enzyme increased: unknown, liver function test: unknown, pneumocystis jirovecii pneumonia: unknown, patient saw his PCP at least twice, ultrasound pancreas: unknown and upper gastrointestinal haemorrhage: unknown on 16Jul2021 recovery and he is 90% better. Investigations: The patient has had blood labs, an endoscopy, a CT scan of his liver. Last Friday the patient saw the upper GI doctor and he had lab work done on the previous Friday, 16Jul2021.The labs look like the patient is on the road to recovery and he is 90% better. Around the 20th or 21st of May, the patient went in and saw his primary care provider and then he was referred to get his upper GI and get the appointment. The patient saw his PCP at least twice and then he saw the doctor that does his colonoscopy and they referred him to the upper GI doctor. Outcome of all the events was resolving.