Dizziness/felt woozy/light headed; Weakness; vision changed; increased heart rate/heart rate went up slightly; had pressure in his head; pressure in his hands and feet like he could not move his feet; pressure in his hands and feet like he could not move his feet; headache; muscle tightness/muscles tightened in his back and in his calf muscles/tightness in his neck; he felt like he was just not himself; lethargic; lump in his throat; lymph nodes got tight on the same side as the vaccine/lymph node on his left side was tight throughout his neck; cringing in his stomach muscles; kind of like a muscle spasm in his stomach; didn't sleep that well last night; wobbly; back was hurting; muscle pain; This is a spontaneous report received from a contactable consumer (patient). A 51-year-old male patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EZ9261, expiry date: unknown), via an unspecified route of administration, from 01Feb2021, at single dose, for COVID-19 immunization. Medical history included anemia (anemic), inflammation, acid reflux (esophageal), pain, on blood thinner, high cholesterol, sinus disorder (sinuses), overactive bladder/bladder control, acid reflux, stools hard (to soften stool), nerves, blood pressure high (high bp), car accident, and costochondritis in chest. Concomitant medication included atorvastatin calcium for high cholesterol from an unspecified date and ongoing; docusate sodium to soften stool; famotidine to soften stool from an unspecified date and ongoing; garlic [allium sativum] as blood thinner from Nov2020 (3 months ago) and ongoing, gabapentin for nerves from an unspecified date to an unspecified date and from Nov2020 (got back on this 3 months ago) and ongoing; hydrocodone for pain; iron for anemia from Nov2020 (been taking this for the last 3 months) and ongoing; meloxicam for inflammation, omeprazole (PROTONIX) for acid reflux from an unspecified date and ongoing; tadalafil for overactive bladder/bladder control from an unspecified date and ongoing; vitamin c (ascorbic acid), colecalciferol (VITAMIN D), vitamin b for trying to build up his immune system; ranitidine hydrochloride (ZANTAC) for sinuses; "One a Day Men's" from 2016 and "50+" (as reported, pending clarification). On 01Feb2021, after the shot, the patient experienced dizziness/felt dizzy and had weakness. When he walked to the desk to check out he felt his vision changed and his heart rate went up slightly but it did go down once he sat down but he felt woozy and had pressure in his head and pressure in his hands and feet like he could not move his feet. He was kind of like dizzy and light headed. He walked somewhere to sit down, he stayed 30 minutes and left after and sat 30 minutes in the car and he got a headache and his muscles tightened in his back and in his calf muscles and he felt like he was just not himself. He felt lethargic and felt like his lymph node on his left side was tight throughout his neck. He felt like his lymph node was getting tight and he just sat until he felt like his symptoms had dissipated. He also had lump on his throat. He had stuff going on with his stomach like cringing in his stomach muscles, it was kind of like a muscle spasm in his stomach. He didn't sleep that well last night (01Feb2021) as he felt some symptoms come on again, the tightness in his neck again and when he sat up, he got dizzy and wobbly, his back was hurting, his calf muscle was tight. He felt more muscle pain. He checked his blood pressure and it was good, but he just felt a little dizzy on 02Feb2021. The patient stated that all his symptoms have improved since 01Feb2021. The patient also mentioned that the girl looked really young (referring to the person who administered the vaccine), "maybe she jacked it up, he knows it supposed to be a very little bit, maybe she put more in him than she was supposed to". He went back to his doctor as he wants to come off of some of his medications because he is supposed to have another shot and he want to take the second shot. He wanted to stop taking all the medications around the second shot in case it was his medications that caused it. The patient asked since he had complications with the fist dose, should he still take the second dose. The patient was recovering from the events.