felt very tired/feeling exhausted/tiredness; Headache; muscle and joint pains; muscle and joint pains; Hot Flashes; Chills/cold chills; nauseous; he felt so hot; thought he had a fever; cramping all through the night to the point he wanted to cry; Couldn't Sleep; He specified the pain was in his hands, legs, feet/sore arm; weakness to the point he couldn't get up to go to the bathroom.; Feeling unwell; Dizzy; but everything else was sore too; This is a spontaneous report from a Pfizer-sponsored program. A contactable consumer (patient) reported that an 82-year-old male patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number was reported as "EUO150"/"LU0150"), via an unspecified route of administration, administered in arm left on 13Apr2021 11:15 (at the age of 82-years-old) as a single dose for covid-19 immunisation. The vaccine was administered at the hospital. The patient medical history included blood pressure, allergy, glucose-6-phosphate dehydrogenase deficiency (G6PD), liver genetic deficiency, and had allergy mice, cat, dust and trees. The patient previously took sulphur and aspirin and makes him bleed because his blood was already thin. Concomitant medications included amlodipine taken for blood pressure; cetirizine hydrochloride (ZYRTEC [CETIRIZINE HYDROCHLORIDE]) taken for allergy; cyanocobalamin (VITAMIN B12 [CYANOCOBALAMIN]) taken for an unspecified indication; all were start and stop date were not reported. An 82-year-old caller received the first dose of the Pfizer-BioNTech COVID-19 vaccine yesterday (13Apr2021), around 11:15 am. He added he was monitored for 15 minutes post injection and then used the public transportation to run some errands and return home. He said he received the injection on his left arm had soreness in this arm after vaccination. He explained around 3-3:30 pm he was walking to get the bus and then felt very tired to the point he wanted to sit on the pavement. He also described it as feeling exhausted. He explained he was so tired on the bus that he was falling asleep and almost missed his stop. He said he also began having joint and muscle pain on the bus. He specified he got home around 4 pm and he then experienced tiredness, headaches, muscle and joint pains, hot flashes, chills, and felt nauseous but didn't vomit. He specified he felt so hot, he had to turn off the heat and remove his clothes, but then he had chills/cold chills and had to turn the heat back on and thought he had a fever. He said around 11 o'clock he had appetite. He added he had cramping all through the night to the point he wanted to cry. He couldn't sleep. He specified the pain was in his hands, legs, feet, and joints. He also said he felt tired like he had worked for 12,000 hours and was not able to move. He said he had weakness to the point he couldn't get up to go to the bathroom. He said he had the headaches all through the night. He was feeling unwell, dizzy. He explained he felt like he was going to die; he was worried about his body. He said he still feels tired. They told him he would only have a sore arm, which he did, but everything else was sore too until about 08:00 today (14Apr2021). He explained that he didn't have all these issues before vaccination. He explained how disappointed he was with his reaction to the vaccine given that he was reluctant to the unapproved vaccine at beginning because he wasn't the person that take a lot of injection and medications, and so finally after his primary physician to influence him to get the vaccine. He mentioned he lives alone, healthy, vegetarian, never smoked, never took recreational drugs, does acupuncture, and takes little medications. He explained most people and his acupuncture doctor said he shouldn't get much reaction from the first dose and the reactions to the second dose are more prevalent. He added he was told that people have mainly experienced soreness in their arm after this vaccination with the first dose. He asked if his symptoms were reported after getting the first dose of the Pfizer-BioNTech COVID-19 vaccine. Everyone told him the first vaccine is a whiz. That it was easy. The second vaccine is the one that have side effects on. He also stated that he almost called to get an ambulance to take him to the hospital. Said that if he had these reactions with the first one, he does not want to take the second vaccine. Sometimes he regret that he have taken it now because he did not expect all of this to happen to him and they just told him that he will have a sore arm on left arm. He was in kind of shock to experience all of this and he was G6PD (Intent: History). He cannot take Sulfur and Aspirin because that makes him bleed because his blood was already thin but that would be no problem also have a liver genetic deficiency (Intent: History). He was allergic to mice, cat, dust and trees (Intent: History). So, he told all what he had that they knew in the beginning they said none of those things will affect. He take B12 (Intent: History) too once a month, he get injection for allergies for his cats and trees and grass once a month but they told him none of the things will affect him. The outcome of the events was unknown.   Information about the lot/batch number has been requested.