Hi Sandra. Welcome aboard. Always glad to have other personal health experiences.
I have taken edta in a formula, called Cardio Chelate. I use it for circulation and heart health. https://www.iherb.com/MRM-Cardio-Chel...Caps/4665?at=0
It does require 1 cap 3 times per day; but it is fairly inexpensive. It also contains a few other substances that help the cardio function. I personally would not take EDTA for more than a month, and maybe twice a year. I don't have anything to justify that statement, except my own psychology. I feel that I am already deficient in some minerals. I also don't want it to interfere with my colloidal silver. So, it is just my own precaution.
Why are you taking your EDTA?
Remember to supplement with minerals. If you take a multivitamin, the minerals in it are probably sufficient. EDTA works very well. That's why you need mineral supplementation. Take them at separate times of the day.