Felt pinched when the vaccine was administered; soreness at the muscle site; little muscle soreness from the vaccine; Postnasal drip in throat; Feeling warm then really hot; Feeling weak; Clammy; sweaty; As if he was going to pass out; almost like a vagal reaction if you got a needle or were scared; vagal reaction but delayed; Heart might have been beating fast; Experience is like the dizziness related in the signs of a severe allergic reaction; Experience is like the dizziness related in the signs of a severe allergic reaction; Anxiety; anxious; This is a spontaneous report from a contactable physician (patient). A 62-year-old male patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; Lot Number and Expiration Date were not reported), intramuscular in left deltoid, on 30Dec2020 10:30, at a single dose, for COVID-19 immunization. The patient's medical history included ongoing mild intraocular pressure. The patient's concomitant medication included unspecified eye drops for a mild intraocular pressure. The patient previously took tetanus vaccine and experienced vagal reaction and passed out (in his childhood). The patient's past COVID tests were always negative. On 30Dec2020, the patient received it at a facility where he is a physician on staff, and they started giving it that day. It was administered by a pharmacist who was very clean and professional, and everything was fine. The patient received the COVID-19 vaccine in the left deltoid and felt pinched when the vaccine was administered, and he felt fine. He did not have any immediate reaction. He sat down, then got up and was standing talking to some colleagues, and about 10 to 15 minutes later, they were talking and felt a little postnasal drip in throat. His colleagues said that is what they felt as well. About 10 minutes later, the patient was feeling warm then really hot to the point where he felt the need for cool air. He added feeling weak and clammy as if he was going to pass out. He started to feel weak and warm and almost like a vagal reaction if you got a needle or were scared. It was almost like he felt hot, sweaty, and weak and feeling like he needed to get to a cool place and sit down. The patient's heart might have been beating fast, but he did not check his pulse. The patient went outside where the temperature was in the thirties and cold. The patient broke out in sweat and felt weak. The patient sat down, and it was cold outside, and he felt better. It passed and he felt fine after that. The symptoms lasted 10-15 minutes top, and it was resolved after the peak. The patient had soreness at the muscle site which got better overnight; little muscle soreness from the vaccine. The patient then got better and felt no other symptoms. He looked up the side effects and talked to the pharmacist. He spoke with a pharmacist, who provided the information on the reported adverse reaction of the COVID-19 vaccines and the signs of a severe allergic reaction included in the PI. He is not an allergic type person. He is familiar with those reactions and never had any trouble. He wasn't quite sure if it was related but then said it is probably somewhat related. The patient explained that he doesn't have any of the reported adverse reactions in the PI; but his experience is like the dizziness related in the signs of a severe allergic reaction in the PI, and he did feel that his heartbeat was fast. He is fine now though. The patient asked if his event is related to the vaccine and what is the impact on getting the second dose when reacting to the first. The patient was thinking that this event is a vagal reaction but delayed. He also explained that he was speaking with his colleagues, right after receiving the COVID-19 vaccine, regarding postnasal drip reaction. The patient also wondered if anxiety related to this discussion could have triggered his symptoms. Originally, he thought it was just him. But after talking to colleagues, maybe he was just a little anxious. He did not feel anxious going in. He did not need any intervention. He did not take any diphenhydramine hydrochloride (BENADRYL) or anything. He sat and rested, and it passed. He has been fine since. He needs a second dose in 3 weeks. There is not a lot of information about the side effects. It was not like he got a rash. He did not have any swelling of the tongue or throat. He just wanted to find out about if he should get the second dose. He really wanted to get the second dose. He just wanted to know if this was common or a concern and should he take the second dose. There were a lot of people getting the vaccine and this was not anything that stopped anyone from getting it. He is just trying to make sure and see how likely it was that it was related to the vaccine and how does it affect him getting the second dose. The patient was recovering from "Felt pinched when the vaccine was administered; soreness at the muscle site; little muscle soreness from the vaccine". The outcome of "Postnasal drip in throat" and "Anxiety; anxious" was unknown. The patient recovered from the other events on 30Dec2020.  Information about lot number and expiration date for the suspect product will be requested in follow-up attempts.