This is a spontaneous report from a contactable consumer (patient). A 74-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection), dose 1 via an unspecified route of administration, administered in Arm Left on 31Jan2021 (Batch/Lot Number: EL3247; Expiration Date: May 2021) (at the age of 74-years-old) as single dose for COVID-19 immunization/COVID-19 protection. Medical history included low thyroid, blood pressure high and cholesterol (abnormal), and drinks 2-3 Oz of Vodka per night before immediately falling asleep. The patent did not have COVID-19 prior to vaccination. The patient had no known allergies. The patient was not pregnant. The patient did not receive other vaccine in four weeks. Concomitant medications included hydrochlorothiazide, lisinopril taken for blood pressure from an unspecified start date and ongoing; atorvastatin taken for cholesterol from an unspecified start date and ongoing; liothyronine sodium taken for thyroid in the 1970's and ongoing; liothyronine sodium (CYTOMEL) taken for thyroid from an unspecified start date and ongoing, unspecified sleeping pill (from Costco) at night. It was reported that the day after the first vaccine, patient had tightness of chest pain, heavy breathing and started having severe weakness. If she walked from one room to another, she was dizzy and lightheaded and felt like she was going to pass out. She didn't call her doctor because she had an appointment already scheduled for 09Feb2021. The patient also experienced shortness of breath on Feb 2021. Patient didn't put that to the vaccine but 7 days later, she started feel better and went to see a doctor. He did an EKG on 09Feb2021. The EKG came back abnormal/irregular with elongated T waves. Ten days later (Feb 2021), patient had treadmill test, it was normal. She was feeling normal. Patient was curious if there is possibility that it might have been caused by the vaccine. The treadmill test was normal but first EKG about 9 days after getting the vaccine was irregular that is why he sent patient to get treadmill. Patient also stated she had normal liver function test. Patient got the first vaccine on 31Jan2021 and the liver enzymes were part of the panel test doctor gave but the liver enzymes were way high. Patient was curious because that might be result of Pfizer vaccine. She had some blood test on 09Feb2021 and some things were abnormal. Her liver enzymes jumped significantly compared to the results 27Oct2020. The ALT on 27Oct2020 was 43. On 09Feb2021 the ALT was 84. Her AST increased from 37 on 27Oct2020 to 94 on 09Feb2021. Patient further stated her main concern is the elevated liver enzyme because vaccine has caused that because she never had elevated liver enzymes before. The last laboratory (whole panel blood test: unknown results) patient had was on 09Feb2021. Her doctor is convinced that she is an alcoholic. She is not an alcoholic. She takes a Costco brand sleeping pill at night and drinks 2-3 Oz of Vodka. She falls asleep immediately. She has since had some lab work done, which indicated elevated LFTs. Patient says her LFTs "doubled in a 3 month period". They were in the 30's in November (2020) and 09Feb2021 was 84. The events resulted to a visit to the physician's office. No treatment was provided for the elevated liver enzymes and irregular EKG result. The patient visited the physician office due to the severe weakness, dizzy, Tightness in her chest and heavy breathing, elevated liver enzymes. The patient recovered from severe weakness, dizzy/lightheaded on 07Feb2021, from heavy breathing on 08Feb2021, from the tightness in chest pain on 10Feb2021. The outcome of dyspnea was recovering, event EKG T wave abnormal was recovered on unspecified date, event while for other events was unknown.