passed out; there was blood on the floor and on her hand; blood pressure dropped; got hot; This is a spontaneous report from a contactable consumer (Nurse). This 70-year-old female consumer (patient) reported for herself that she received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot Number, Expiry Date: Unknown), via an unspecified route of administration on an unspecified date as dose 2, single for covid-19 immunisation. Medical history included allergic to plastics. She took Taxotere for breast cancer 11 years ago and she had virtually the same reaction as vaccine dose 2. She went to the bathroom and went to stand up and her insides were boiling hot. Her innards were like Mount Vesuvius for heat and she could feel her blood pressure dropping. She managed to slide off the toilet and her effort to breathe prostrate. It took an hour to get over it and a couple of days to get back to speed. The patient's concomitant medications were not reported. The patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot Number, Expiry Date: Unknown), via an unspecified route of administration on an unspecified date as dose 1, single for covid-19 immunisation. The caller stated that she had a serious adverse reaction to the second vaccination of the Pfizer Covid vaccine. She stated that her blood pressure dropped and she passed out, went to the emergency room, and 4 stiches in her forehead later found out that Taxotere and the vaccine had a similar ingredient. This was 45 hours after the vaccination but she stood up and got hot and there was no warning, it was like "bang" and when she came to and there was blood on the floor and on her hand. She stated that 11 years ago she took Taxotere for breast cancer and she had virtually the same reaction. She went to the bathroom and went to stand up and her insides were boiling hot. Her innards were like Mount Vesuvius for heat and she could feel her blood pressure dropping. She managed to slide off the toilet and her effort to breathe prostrate. It took an hour to get over it and a couple of days to get back to speed. She stated that she had similar reactions with these and the thing that struck her was that they were both 45 hours later, almost 48 hours later. She stated that she found out that they both have whatever made the taxotere 'tax'. She stated that she was also allergic to plastics so she took an EpiPen with her. She stated that she was not opposed to getting a booster dose but she did not know if it was safe. Her primary care provider said no to get more but her oncologist said to go ahead. She did not want to get Covid. She did not know what to do to attenuate this whether she should take Benadryl or use an EpiPen. She stated that she was not blaming anyone and this was not Pfizer's fault. She wanted to know whether the another dose of the vaccine would be safe or not. The patient underwent lab tests and procedures which included blood pressure result was decreased on an unspecified date. The outcome of all events was unknown.   The lot number for the vaccine, [BNT162B2], was not provided and will be requested during follow up.