Awful/medicine like tastes in her mouth; Nausea; Gastritis; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 65 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 07Sep2021 10:00 (Lot number: FD8448) at the age of 65 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "Heart murmur" (unspecified if ongoing); "arthritis in the knees" (unspecified if ongoing), notes: Verbatim: arthritis in the knees; "bursitis in the hips" (unspecified if ongoing), notes: Verbatim: bursitis in the hips; "acid reflux" (unspecified if ongoing), notes: Verbatim: acid reflux; "Hiatal hernia" (unspecified if ongoing); "Ulcer" (unspecified if ongoing); "Gastritis" (unspecified if ongoing); "sinus infections" (unspecified if ongoing), notes: Verbatim: sinus infections; "Allergy" (unspecified if ongoing); "Blood pressure" (unspecified if ongoing). Concomitant medication(s) included: PEPCID taken for peptic ulcer (ongoing); BABY ASPIRIN (ongoing); CLARITIN taken for hypersensitivity (ongoing); HCTZ taken for blood pressure measurement (ongoing); BUSPAR taken for anxiety, panic attack; VITAMIN D3; VIT C; ZINC. Vaccination history included: Flu vaccine (Verbatim: She only had the flu shot one time in her life. It was 10 years ago. When attempting to clarify if it was 10 years ago, she stated that she was laid off in 2013 and that she thinks she had to take the flu shot or lose her job.), administration date: 2013, for Immunisation. The following information was reported: TASTE DISORDER (non-serious) with onset 07Sep2021, outcome "recovering", described as "Awful/medicine like tastes in her mouth"; NAUSEA (non-serious) with onset 07Sep2021, outcome "unknown", described as "Nausea"; GASTRITIS (non-serious) with onset Sep2021, outcome "unknown", described as "Gastritis". Therapeutic measures were not taken as a result of taste disorder, gastritis. Therapeutic measures were taken as a result of nausea.  Additional information: Patient reported that how long this taste will last in her mouth? She also states that she hasn't been anywhere in six weeks so after the shot she went somewhere to get something to eat. She had a Jr Cheeseburger and she thought a milkshake sounded so good as a reward for getting the first shot but she couldn't even drink it. She went home and still had that awful taste in her mouth, walked around the yard and her brother brought her and she ate some chicken but not all the potatoes. States she can still notice the taste at different parts of the day but also with some nausea. Patient reported that the end of the call that she used lidocaine cream once and was able to taste a meatal taste in her mouth so she knows she was sensitive to things like that. Reporter stated that in general, the first dose does not produce enough immunity to fully protect against the disease, but "primes" the immune system. An immune response that fully protects a person does not develop until after additional doses (for example, after a second dose for the Pfizer-BioNTech COVID-19 Vaccine. She got the shot, the first one, on Tuesday and everything went well. Maybe an hour after she got the shot, she had this awful taste in her mouth. She did have a lot of gastritis and has had it 6 or 8 times a year, a bad episode of it. Patient reported that really nauseated and the water tastes like salt water, Coke drinks for nausea and that don't taste real good at all. She did eat some yesterday but could not even take a vitamin and couldn't even get it down her throat. Reported that when she was little she had asthma, like 7th, 8th and 9th grades, they gave her a shot and she threw up and passed out.   No follow-up attempts are possible. No further information is expected.