Heart racing; Feeling bad; Having really bad side effects; couldn't sleep last night; Sick; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP).  A 65 year-old female patient received bnt162b2 (BNT162B2), administration date 08Mar2021 (Batch/Lot number: unknown) at the age of 65 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Epilepsy" (unspecified if ongoing), notes: Verbatim: Epilepsy. Concomitant medication(s) included: OXCARBAZEPINE taken for epilepsy. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE), for COVID-19 immunisation. The following information was reported: INSOMNIA (non-serious) with onset 08Mar2021, outcome "unknown", described as "Having really bad side effects; couldn't sleep last night"; ILLNESS (non-serious) with onset Mar2021, outcome "unknown", described as "Sick"; FEELING ABNORMAL (non-serious) with onset 08Mar2021, outcome "unknown", described as "Feeling bad"; PALPITATIONS (non-serious) with onset 09Mar2021, outcome "unknown", described as "Heart racing". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of insomnia, illness, feeling abnormal, palpitations.  Additional information: The reporter stated that, the reporter called on behalf of his wife, (name) (spelling not confirmed) (name). Stated that, she had her second Pfizer COVID-19 Vaccine shot yesterday morning on 08Mar2021, about 24 hours ago. And she was having really bad side effects. Stated that, ever since she got the shot, probably 3-4 hours after the shot was given she started feeling bad and she went to bed. She couldn't sleep last night, the reporter slept but the patient had been up all night. Stated that, she couldn't sleep last night and she said her heart was racing this morning. And the reporter guessed that, he needed to report this first. Stated that, she was sick, she was really sick. Stated that, the reporter was informed about the role of Pfizer Drug Safety. The reporter stated that, the vaccine was administered on 08Mar2021, exactly about 23 hours ago. The reporter stated that, the patient felt terrible, her heart was racing and she couldn't sleep last night at all. Stated that, her first shot, it didn't bothered at all, second was (incomplete sentence). The reporter seriousness for the events was reported as unspecified. Stated that, the LOT looks like it says EN6799. The reporter didn't know like, he was not sure. Stated that, it's so damn tiny, it's hard to see it. It's either 6799 or 6199. Stated that, she was epileptic, so she takes medication for that. Stated that, Oxcarbazepine (not clarified, hence not captured in tab). The reporter stated that, she had routine blood test last week. Stated that, they didn't say anything, they call if there was a problem, they didn't call so. They were supposed to call. Stated that, she just took Advil. Stated that, the reporter didn't know, whom else did the reporter share report with. Enquired, should the reporter take it to the hospital she got it at or if she still feel that way. Reporter was also suggested to contact a physician or a pharmacist in case of an emergency. Reporter was informed about Pfizer Medical Information and the contact was provided.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.