headache; sick; has lost 20 pounds; doesn't feel good; head is foggy; severe vertigo; dizziness; unsteady; nausea; could not walk; This is a spontaneous report from a contactable consumer or other non hcp (patient). A 49-years-old non pregnant female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, formulation solution for injection; #lot: ER8730) via an unspecified route of administration, administered in left arm on Saturday, 27Mar2021 11:30 AM (at the age of 49-years-old) as dose 1, single dose for covid-19 immunization. Patient was non pregnant at the time of vaccination. Patient was not diagnosed with covid prior to vaccination and not tested for covid since vaccination and no other vaccine administered within 4 weeks to vaccination. The patient's medical history included lupus but in remission for 10 years, and also stated at first her doctor told her because she has been in remission for 10 years, he does not consider her immunocompromised or high risk, had epilepsy whenever she was a teenager and she outgrew it when she was 21, known allergies included latex and factor 5, the heterozygous version (she stated that she must have inherited one copy from her dad, who may have had two copies, but they don't know, and he died a 47 from a cerebral aneurysm. Stated he woke up with a headache one morning and dropped over dead) from an unknown date and unknown if ongoing. The patient's concomitant medications received within 2 weeks of vaccination included ascorbic acid (VIT C), cholecalciferol (D3), zinc (ZINC) and elderberry taken for an unspecified indication, start and stop date were not reported. Patient reported elderberry: She has been in remission for 10 years. On 28Mar2021, 06:30, the patient experienced severe vertigo, dizziness if she bends over, unsteady and nausea. Patient stated she had a really bad case of vertigo. Had to lay down and slept for 5 hours. Woke up still dizzy and slowly it got 90 percent better. Slightly less dizziness but super concerned about second shot, on 28Mar2021 at 06:00AM, patient could not walk, she stumbled into the kitchen, on 29Mar2021, the patient experienced head is foggy and on unspecified date, the patient still doesn't feel good and experienced headache last night, feeling sick and had lost 20 pounds. Patient stated she is not sure about getting the second vaccine and also stated that she didn't think of it at the time because she was feeling just awful. It was reported that she can't exercise because she feels crazy dizzy, still experiencing the same symptoms as reporting. Patient stated she woke up this morning and felt unsteady and dizzy. If she moves her head to quick, it almost feels like vertigo. She is still foggy. She does not feel steady on her feet. Patient took covid vaccine because she was in the 50s group. She wanted to be vaccinated and not be in fear of catching covid. Patient would love to know that this is going to end soon, seeking information about her side effects she is experiencing and worried that this is causing some type of issue that is making her dizzy, states she doesn't feel normal. Call handler can understand her fear because her dad woke up with a headache one day and died at 47. She received her first dose of the covid vaccine on Saturday, 27Mar2021 at 11AM and had no problems whenever she got home. She woke up early on Sunday, 28Mar2021 at 6:00AM, she could not walk. She stumbled into the kitchen. She had a really bad case of vertigo. She was hoping it would go away. She was crying and felt like she wanted to die. On Sunday, she laid down, and then every hour she would try to walk and felt unsteady. She stayed in her bed until 2:00PM. As long as her head was not above her heart, she was not moving around, or overexerting herself, she felt okay. She did not know that dizziness was a side effect. She did not expect to have side effects after the covid vaccine. Out of everyone she knows, no one has had any issues with the Pfizer covid vaccine, she felt comfortable going to get it. She was 50 but she did not expect the first dose of the covid vaccine to kick her butt. She has lost 20 pounds; she has been working out. She exercises every day. She could not exercise today or yesterday as she didn't feel safe. She was supposed to do high intensity interval training) but didn't do it. She is in good shape. The manufacturer recommended that she did not get the second dose. She does not have a fever. She just took her temperature, and she is not running a fever. She woke up this morning and felt unsteady and dizzy. She feels better now. She went for walk around the block. Reporter stated serious as no and adverse events did not require a visit to emergency room, physician office and she was not going to risk being exposed. No treatment received events severe vertigo, dizziness, unsteady and nausea. Treatment received for event headache included Tylenol and also stated that maybe she can take Dramamine and Tylenol alternating half the day so she can function. The outcome of the event's severe vertigo, dizziness, unsteady, could not walk and head is foggy was recovering and outcome of the event headache was recovered on unspecified date and outcome of event nausea was not recovered and for remaining events it was unknown.    No follow-up attempts are needed. No further information is expected.