One month ago i had a iton level of 12, im taking iton tablets for it can low iron be causibg my high pulse rate especially with activity.

Anemia: Hi! if you have iron deficiency, you are probably somewhat anemic. Anemia can certainly cause a fast heart rate with exercise. However, if your fast heart rate makes you dizzy or if it has been going on for some time, you should see your primary physician for blood tests and an electrocardiogram to make sure there is nothing else going on.

Yes: Yes. Anemia (low level of red blood cell pigment) from any cause can make your heart beat faster (high pulse rate). Iron deficiency (low level of iron in he body) is a common cause of anemia.