Rectal bleeding in his bowel movements/ Bleeding; Heart is racing; Blood pressure goes up high; His stools were solid but dark; He thought he was done and had to rush back in; This is a spontaneous report from a contactable consumer (patient's wife). A 73-year-old male patient received bnt162b2 (Pfizer-BioNTech Covid-19 Vaccine), via an unspecified route of administration on 26Jul2021 (Batch/Lot number was not reported), at the age of 73-year-old, as dose 1 single for COVID-19 immunisation. Vaccine was not administered at facility. Medical history was reported as none. There were no concomitant medications. No prior vaccinations (within 4 weeks). The patient was sprayed with chemicals in war ever since can't take drugs. Worried about getting vaccine and everything. The patient experienced heart is racing and blood pressure goes up high on 26Jul2021 and rectal bleeding in his bowel movements/ bleeding on 27Jul2021. In 2021, his stools were solid but dark, he thought he was done and had to rush back in. The reporter stated her husband received the first dose of the vaccine on 26Jul2021. He was not supposed to have potassium, and they were told there are 2 kinds of potassium in the vaccine after he received it. Since receiving the vaccine her husband had rectal bleeding in his bowel movements, his heart is racing, and his blood pressure goes up high and comes back down. The reporter asked how long will they last and is there anything they can do about it? The reporter stated if she knew ahead of time he never would've gotten it. Her husband got the first COVID vaccine 26Jul2021. He had a bad reaction to it. It is still going on. Originally he started bleeding. The vaccine had two kinds of potassium in it, and he can't take potassium. His heart is racing and his blood pressure keeps going up. He went to the GI doctor, who told him he didn't know what to do. He didn't have a prescribing doctor. He had blood coming from his rectum in his bowel movements the next day. It was just that day. He isn't bleeding still. It was bleeding on and off, and it happened 2-3 times that day 27Jul2021. Since the shot, he has had high blood pressure, and his heart has been racing. He went to the GI doctor who did an x-ray, and there is no problem. She is wondering how long the blood pressure and heart rate is going to last. It'ss a little bit up. He noticed the biggest difference when he gets up or goes to bed. It had been going on though. He could not have a lot of medications because of adverse reactions. His stools were solid but dark, and it just happened that one day. He thought he was done, and had to rush back in. The events required a visit to Physician Office. The patient underwent lab tests and procedures which included blood pressure: goes up high and comes back down on 26Jul2021, X-ray: no problem in 2021. The outcome of the events rectal bleeding in his bowel movements/ bleeding was recovered on 27Jul2021, of the events heart is racing and blood pressure goes up high was not recovered, of the event his stools were solid but dark was recovered in 2021. The outcome of the other event was unknown.  The lot number for the vaccine BNT162B2 was not provided and will be requested during follow up.