she felt her body slide off the seat and her head rocked to the right and hit her shoulder/she nearly passed out; dizzy; she could feel something going on with her heart/heart started racing; felt like she was stoned; had a hard time forming sentences and talking; Headache; tired; she was jolted back by the pain in her neck; felt fluish; This is a spontaneous report from a contactable consumer. A female patient (age: 60  with no unit provided) received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE), dose 1 via an unspecified route of administration on Mar2021 (Batch/Lot number was not reported) as single dose for covid-19 immunization. The patient was pretty reactive to most drugs. The patient had anaphylactic reaction to a spider bite. She has a history of having gotten stung by a scorpion and having an anaphylactic reaction. She was also one of those people who end up having to throw away a lot of medicines because she was allergic to them. She has had seven spine surgeries and gets a lot of shots so she was not scared of needles. The patient had the first shot on Friday in Mar2021. The patient had a not so pleasant reaction to it immediately. The patient heart started racing right after they injected and then she felt dizzy in Mar2021. The heart racing went away pretty quickly but the dizziness did not. For the first 15 minutes the patient had a hard time forming sentences and talking. It felt like when someone wakes you from a dead sleep. Like wanting to tell people to go away, go away. Then she felt head drop to right shoulder and slide off of feet. That caused pain because she have had multiple neck surgeries in the past and jolted her out of whatever was happening. Then that passed. At 4:30 she told them she need to go before rush hour. She felt like she was driving stoned. Very carefully like she was under the influence of something. The dizziness gradually faded, and she went to bed. The next day she had a headache, felt fluish, and tired. And then eventually everything went away. She took a Benadryl an hour and a half before getting the vaccine because that's why provider told her to do. She did take Benadryl before the vaccine just in case, she was unsure if she took it after or not, she thought about it. As soon as she got the injection of the first dose of the Pfizer COVID 19 vaccine she could feel something going on with her heart. Then she got really dizzy. While waiting in the parking lot, there were two paramedics that stood there and spoke with her because she had mentioned that she thought she was high risk. The first thing she noticed was that she was wondering why they wouldn't go away, she was dizzy, and then she felt her body slide off the seat and her head rocked to the right and hit her shoulder and she realized she nearly passed out and she was jolted back by the pain in her neck. On the way home she was still dizzy and as she was driving she felt like she was stoned. She was very careful getting home and went to bed at about 1830 and just watched TV. The dizziness went away overnight. The next day she had a headache and was tired and then by Sunday she was okay. She was concerned that her doctor will tell her it was an allergic reaction and she just need a straight answer as to whether the second shot was recommended for her. Outcome of the events was recovered in Mar2021.   Information about lot/batch number has been requested.