I have gone through your question. I can understand your concern.
He need to go for investigation to search the cause of GI bleeding. He should go for ultrasound
abdomen and gastrointestinal endoscopy
to search the cause. Treatment of cause is the only permanent solution. Till that he has to take iron infusion or blood transfusion
to meet the demand.
Hope I have answered your question, if you have any doubts then contact me at bit.ly/Drsanghvihardik, I will be happy to answer you.
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