I received the first dose of the Pfizer vaccine. During the 15 minute evaluation, i felt nauseous, hot/sweaty and my vision got blurred to the point i passed out on the floor. After I regained conscio; I received the first dose of the Pfizer vaccine. During the 15 minute evaluation, i felt nauseous, hot/sweaty and my vision got blurred to the point i passed out on the floor. After I regained conscio; I received the first dose of the Pfizer vaccine. During the 15 minute evaluation, i felt nauseous, hot/sweaty and my vision got blurred to the point i passed out on the floor. After I regained conscio; I received the first dose of the Pfizer vaccine. During the 15 minute evaluation, i felt nauseous, hot/sweaty and my vision got blurred to the point i passed out on the floor. After I regained conscio; I received the first dose of the Pfizer vaccine. During the 15 minute evaluation, i felt nauseous, hot/sweaty and my vision got blurred to the point i passed out on the floor. After I regained conscio; This is a spontaneous report from a contactable consumer. A 27-year-old male patient received bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE), dose 1 via an unspecified route of administration, administered in the left arm on 10Apr2021 at 15:00 (Batch/Lot Number: EW0158) at 27-years-old as a single dose for COVID-19 immunization. The patient did not receive any other vaccine within four weeks of the suspect vaccine.   The patient's medical history was reported as none. There were no concomitant medications received within the two weeks of vaccination. The patient experienced: "I received the first dose of the Pfizer vaccine. During the 15-minute evaluation, I felt nauseous, hot/sweaty and my vision got blurred to the point I passed out on the floor. After I regained consciousness (medically significant, hospitalization) on 10Apr2021 at 15:00. Reported Event: The patient received the first dose of the Pfizer vaccine. During the 15-minute evaluation, the patient felt nauseous, hot/sweaty and their vision got blurred to the point where the patient passed out on the floor. After, the patient regained consciousness with the assistance from the doctors and nurses there. The patient passed out again within minutes. After the second time, the patient was placed on a stretcher and sent to the emergency room for further testing. The patient reported that he had no history of medical conditions. The patient stated "all because of my vaccine hospitalization, I acquired a (some amount) medical bill. I would like to discuss assistance for handling this. I have all of the paperwork as proof. It's very unfortunate to pay this amount due a shot."  Pfizer received an adverse event letter from withheld directed to Department, on 03May2021.   Customer Verbatim: "On Saturday, 10April2021, I received the first dose of the Pfizer vaccine. During the 5-minute evaluation, I passed out on the floor. After I regained consciousness, I passed out again within minutes. After this, I was taken to the emergency room. I have no history of medical conditions. All because of my vaccine hospitalization, I acquired a (some amount) medical bill. I would like to discuss assistance for handling this. I have all of the paperwork as proof. "  It was reported that the events required an emergency room visit and physician office visit. The patient was hospitalized due to the events from 10Apr2021 to an unknown date for 1 day (as reported). It was reported that no therapeutic measures were taken. The clinical outcome of the events was recovered on an unspecified date. The patient was not tested for COVID post vaccination.  No follow-up attempts are possible; information about batch/lot number cannot be obtained.