Passed out; Almost died; Couldn't hear anything in my ears; Almost threw up; Heart was going crazy; Blood pressure was so extremally low; My eyes are so blurry/I am trying to focus they hurt so much; I am trying to focus they hurt so much; Can't walk you know my feet are and my legs are so weak; Can't walk you know my feet are and my legs are so weak; Dizzy; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 30-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 10Feb2023 as dose number unknown (booster), single (Lot number: GL0447) at the age of 30 years intramuscular, in left arm for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: coviD-19 vaccine (Dose no: 1, Manufacturer: Unknown, took the other two), administration date: 24May2021, when the patient was 28-year-old, for COVID-19 Immunization; coviD-19 vaccine (Dose no: 2, Manufacturer: Unknown, took the other two), administration date: 16Jun2021, when the patient was 28-year-old, for COVID-19 Immunization. The following information was reported: NEAR DEATH EXPERIENCE (medically significant) with onset 10Feb2023, outcome "unknown", described as "Almost died"; VOMITING (non-serious) with onset 10Feb2023, outcome "unknown", described as "Almost threw up"; HYPOTENSION (non-serious) with onset 10Feb2023, outcome "unknown", described as "Blood pressure was so extremally low"; GAIT DISTURBANCE (non-serious), ASTHENIA (non-serious) all with onset 10Feb2023, outcome "unknown" and all described as "Can't walk you know my feet are and my legs are so weak"; DEAFNESS (medically significant) with onset 10Feb2023, outcome "unknown", described as "Couldn't hear anything in my ears"; DIZZINESS (non-serious) with onset 10Feb2023, outcome "unknown", described as "Dizzy"; CARDIAC DISORDER (non-serious) with onset 10Feb2023, outcome "unknown", described as "Heart was going crazy"; EYE PAIN (non-serious) with onset 10Feb2023, outcome "unknown", described as "I am trying to focus they hurt so much"; VISION BLURRED (non-serious) with onset 10Feb2023, outcome "unknown", described as "My eyes are so blurry/I am trying to focus they hurt so much"; LOSS OF CONSCIOUSNESS (medically significant) with onset 10Feb2023, outcome "unknown", described as "Passed out". The patient underwent the following laboratory tests and procedures: Blood pressure measurement: extremally low, notes: extremally low. Therapeutic measures were taken as a result of gait disturbance, asthenia, dizziness.  Clinical course: Concern: Consumer stated, I took the booster yesterday and unfortunately last night I passed out 4 times. I took the other two, it was you know, it was the journey, it was hard but it wasn't like yesterday. (Further clarification unknown) Yesterday it was unbelievable, I couldn't stand, I couldn't do anything, I almost threw up couple of times, it was horrible, I almost died yesterday, seriously my heart was going crazy, I couldn't hear anything in my ears, my blood pressure was so extremally low, I don't know what's in it, but its horrible. Time and date when the vaccine got administered: Consumer stated, It was yesterday 10Feb2023 and it was around 9:10 something like that. Medical condition and Concomitant medication: Consumer stated, No, I am extremally healthy that's why I am loosing my mind. No, I have not went any lab test. Treatment: Consumer stated, I am just taking Tylenol and I am drinking like Pedialyte and stuff like that, I am just resting because I can't walk you know my feet are and my legs are so weak. I am really so dizzy. Treatment: Consumer stated, I am just taking Tylenol and I am drinking like Pedialyte and stuff like that, I am just resting because I can't walk you know my feet are and my legs are so weak. I am really so dizzy. When asked for vaccination card handy of 1st and 2nd dose: Consumer stated, I don't have the card but I have the screenshot of the information for the same it just indicate date and the type. When probed for the vaccinations within four weeks prior taking the Vaccine: Consumer stated, No. Anything else to help with: Consumer stated, No, that's it, I don't know if anybody else is calling with the same issues or not, I do not know if that's normal or not. That's all I called you.