the next day he fainted; cough; sweaty and clammy; sweaty and clammy;  This is a spontaneous report received from contactable reporter(s) (Consumer or other non-HCP) from medical information team for a Pfizer sponsored program. The reporter is the patient.  A 62-year-old male patient received bnt162b2 (BNT162B2), administration date 05Nov2021 (Lot number: FG3527) at the age of 62 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "Diabetes" (unspecified if ongoing), notes: Verbatim: Diabetes. Concomitant medication(s) included: METFORMIN. Vaccination history included: Bnt162b2 (Dose: 2, Lot: ER8727), administration date: 21Mar2021, when the patient was 62 years old, for COVID-19 immunisation; Bnt162b2 (Dose: 1, Lot: EN6203), administration date: 02Feb2021, when the patient was 62 years old, for COVID-19 immunization.  The following information was reported: SYNCOPE (hospitalization, medically significant), outcome "unknown", described as "the next day he fainted"; COUGH (non-serious), outcome "unknown", described as "cough"; HYPERHIDROSIS (non-serious), COLD SWEAT (non-serious), outcome "unknown" and all described as "sweaty and clammy". The events "the next day he fainted", "cough", "sweaty and clammy" and "sweaty and clammy" were evaluated at the physician office visit and emergency room visit. The patient underwent the following laboratory tests and procedures: blood glucose: 7.1, notes: last; 6.6, notes: before; blood pressure measurement: normal; blood test: unknown; chest x-ray: normal; computerised tomogram: normal; electrocardiogram: normal.  Clinical course: Patient enquired to whom it may concern. He was still waiting for someone to get back to him on his Pfizer booster he received back on 05Nov. He was rushed to the hospital the next day from it. He emailed a few weeks ago on this. It was reported that the patient received the COVID-19 vaccine booster dose and the next day he fainted. He went to the doctor and was told that he was ok. Also reported to have had a cough for the next 4-5 days after the vaccine. He had already called Pfizer: INT-#. He wanted to know if those were reported side effects for the vaccine. Fainting may be associated with the injection of this vaccine. Cough was not listed as a side effect but these may not be all the possible side effects of the vaccine. The possible side effects of the vaccine are still being studied in clinical trials. Referred to HCP whenever symptoms that may be associated to the vaccine appear. Patient wanted to know if there are compensation programs for medical bills associated with the vaccine. 2 of his friends are nurses and they thought he had a heart attack and rolled him over and started chest compressions and he jumped up and woke up right away. Stated that the patient takes Metformin. Stated his sugar level goes up and down and he goes every 3-6 months and his last was 7.1 before was 6.6. He stated that he has been on Metformin for a couple years. Stated that the patient wound up in the hospital and he put the report in twice and had mentioned that he had gotten the booster and went to the hospital by ambulance and in the hospital was there 4 hours and was released and they said it was probably from the booster shot. Also stated that states he got the booster Friday morning and Saturday evening. The patient had a CAT scan, chest xray and lots of blood work and was told it was probably a reaction to the booster as everything was coming out normal. Anatomical Location of Administration of Pfizer vaccine was reported as arm.