How can I lower my pulse!? (Tried benzos and other meds but nothing seems to work!)?

If you donate blood more than once every 4 months you are asking for trouble, perhaps you donated too much blood, your in compensatory tachycardia. Dont take Benzos for the heart rate, although it can help calm you down. GO TO A MD. We don't know how much or how often you have given blood that can be a very real cause...