Tachycardia; She wanted to eat everything in sight/That is not something she normally does; Oxygen level was 98; This is a spontaneous report from a contactable consumer. This 84-year-old female consumer (patient) reported for herself that she received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; Solution for injection; Lot number: EWO151) via an unspecified route of administration on 13Apr2021 at 14:00 hours on right arm as dose 1, single and second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; Solution for injection; Lot number: unknown) via an unspecified route of administration on 04May2021 on right arm as dose 2, single for COVID-19 immunization. Medical history of the patient included ongoing pulmonary fibrosis, enlarged heart, blood pressure measurement, blood cholesterol. Concomitant medications included losartan taken for blood pressure measurement, rosuvastatin calcium (Crestor) taken for blood cholesterol. No investigation assessment was performed. The additional vaccines administered on same date of the pfizer suspect were reported as none. On an unknown date the patient experienced tachycardia, she wanted to eat everything in sight/that is not something she normally does (eating disorder) and her oxygen level was 98 (oxygen consumption). The patient reported that she just wanted someone at Pfizer to know this because she thought it was such a phenomenon. She has had Pulmonary Fibrosis for 10 years. She has managed to keep it under control. She was on oxygen. After her first Pfizer shot, she did not have any side effect and she realized her oxygen level was 98. It was done again with the second one. She had the second shot and as of this time she still does not need supplemental oxygen. She was sure people were calling with bad side effects and she thought she should call because this was fantastic. Usually her O2 sat was 91 to 93%. She was hopping around on her own with no oxygen and her O2 sats was 98 to 99%. She mentioned that her her first dose was exactly three week to the day of the second shot on 04May2021. She suffers from tachycardia. After the first shot the people stayed with her until her heart rate went down. Initially after the shot her heart rate was up. Within 30 minutes her heart rate went down. Within the first hour her oxygen was 98%. When she got the vaccine she was on 2L of oxygen. She pretty much wore it all the time, it depends on the oximeter. It tells her and sometimes she can tell by if she is up walking around. She was able to come off the 2L within the first hour after receiving the first vaccine. She was not keeping track of it, but she thought it went on for several days. When she got the second dose, she was wearing 2L of oxygen. The tachycardia happened again with the second dose, but within 30 minutes her heart rate was below 100. She had the oximeter out to check her heart rate and she could see that her oxygen was up to 98 and it was still up. She had been able to walk quickly since and has been so excited about this. She asked the guys that gave the shot if they had an EpiPen. Caller states she had been rushed to the hospital in the past for things she has been given. She was not sure of the spelling, but thinks it was Avalox. Avalox was the antibiotic that she had a reaction to. As a result of that, she only use natural products. Her body does not like drugs. She was talked in to taking one Avalox and she thought she would not do that again. That was why it took her a while to get it. The reaction to Avalox was 6 or 7 years ago. Caller does not have NDC, lot, and expiry for Avalox. They told her she had anaphylactic shock. She had a friend stay the night with her both times after she had the shot. She does not know what is in the shot, but she had the munchies. She wanted to eat everything in sight. That is not something she normally does. The only reaction she had was the munchies. She looked up the ingredients and could not read them after she looked them up. She wanted to see what was the phenomenon. The event outcome was unknown.  Communication: filed. Offered to provide caller with phone number if she wanted to speak with them about the ingredients in the vaccine, but caller declined to be transferred or to be given the phone number.  Description of complaint: Caller reporting her experience with Pfizer COVID19 Vaccine. She doesn't know what is in the shot, but she had the munchies. She looked up the ingredients and couldn't read them after she looked them up.   No follow-up attempts were needed. No further in