those EDTA Iv's are expensive...and they really do not work well for mercury...it should be the last resort...and you may need many...because it doesn't bind well with mercury....the dmsa works much, much better.....BUT you should NEVER take it everyday...Only 3 days every 2 weeks...IF you take it Everyday....You will most likely never get well....You need time for your body to build up it's strength after every dose.....Sandra P