<s>[INST] I am a 70 year old heart patient who started to go in to and out of Afib. My doctor subscribed Xerelto to thin the blood to avoid strokes. The Xarelto exacerbated the bleeding of hemorrhoids which eventually took me to the ER where they found my hemoglobin count was 8.0. It had been 14.0 in a test 6 weeks prior to the event. I was given a blood transfusion of two units. My hemoglobin was up to 10.5 a week later. What is the expectation and time line of the hemoglobin returning to normal? How low could the hemoglobin have gone before it was life threatening? [/INST] Hi, dear. I have gone through your question. I can understand your concern. Your hemoglobin level is low and bleeding from piles is the cause. Hemoglobin below 6 can become critical.  Generally he comes to normal level after treatment.  Time depends on treatment.  Single unit of blood transfusion increase the he level up to 1 or 1.5 gm. Oral or injectable iron takes long time.  You should go for treatment of your piles.  Because once bleeding is control your he will come back to normal. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>