allergic reaction to the first dose; Felt like her throat was constricting; Very flustered while driving home, somehow missed her exit; face is swollen; fast heartbeat; heart racing really fast; This is a spontaneous repot from a contactable consumer (patient). A 58-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EN6199), intramuscular in the muscle of upper left arm (deltoid left) on 03Mar2021 17:15 at a single dose for COVID-19 immunization. The vaccine was administered at a pharmacy, not a facility. No other vaccines were administered on same date of BNT162B2. The patient did not receive any other vaccines within 4 weeks prior to receiving BNT162B2. Medical history included hormone replacement therapy, high blood pressure, and "very sick she guessed from a cold and had asthma" on 2011 (from 10 years prior to the report; this was the only time she had asthma, and her physician said her asthma can come on because of being sick). The patient stated that she generally has higher blood pressure than she would like, but she is otherwise very healthy, and never had an allergic reaction to anything. Family history relevant to the adverse events was none. Concomitant medications included hydrochlorothiazide (HYDROCHLOROTHIAZIDE) for high blood pressure, valacyclovir (VALACYCLOVIR), rosuvastatin (ROSUVASTATIN), omega-3 nos (OMEGA-3 NOS, capsule), estrogen (ESTROGEN) for Hormone replacement therapy, progesterone (PROGESTERONE, 100 mg capsule) for Hormone replacement therapy, all were from unspecified date and ongoing. It was reported that patient gets her flu shot every year and never had an adverse reaction. The patient reported that she had an allergic reaction to the first dose of PFIZER-BIONTECH COVID-19 VACCINE she received last Wednesday (03Mar2021) after an hour after she received it (18:45) while driving. She mentioned that she saw on the package insert what a severe allergic reaction would include. She experienced swelling of the face and a fast heartbeat but no difficulty of breathing on 03Mar2021. The patient further explained that she had her first dose of the PFIZER-BIONTECH COVID-19 VACCINE on 03Mar2021 around 17:15 at a pharmacy. She left the pharmacy around 17:30. While she was driving home, she started to feel her heart racing really fast and felt like her throat was constricting within about 30 minutes of being administered the vaccine, by around 17:45. She was very flustered while driving home which is usually about 30 minute drive; but somehow she missed her exit and it was rush hour so it was about 18:15 when she got home. When she got home her husband asked her if she had been crying because he said her face looked weird. She told him he thinks her face is swollen. All of these events lasted maybe 1-2 more hours or less after she got home around 18:15, maybe a few hours before she recovered completely. She was expecting soreness and pain from the PFIZER-BIONTECH COVID-19 VACCINE but was not expecting the fast heartrate or swelling. She was reading through the information she got from the pharmacy for the PFIZER-BIONTECH COVID-19 VACCINE because she was a little concerned about getting the second dose due to these events. She has never had an allergic reaction to anything before and wondered if she should go to a hospital for her second dose of the PFIZER-BIONTECH COVID-19 VACCINE in case she has these events again, or a worse reaction. She asked about these events and dosing recommendations for the Pfizer. The reported adverse events did not require a visit to the emergency room or physician office. The patient was not hospitalized. Outcome of the events was recovered on 03Mar2021.