Effectiveness range from 75% to 97% reversal of blocked arteries by objective testing in various studies. Meta-analysis headed by L.T. Chappel of 18 scientific studies involves the total of 22,565 patients confirmed that chelation therapy were good to excellent success rate in 87% of those with blocked arteries with objective testing.
There was short research funded by National Institute of Health of USA started in 2002 on chelation therapy. Unfortunately, the research design was not done by chelationist physician and seems that it was designed to fail. Surely is, the study was prematurely stop for reason they know best.
Physician who never practice or “see” the positive effect of chelation usually give unfair remark without studying the report on the effectiveness of chelation therapy.