Hello Mary,
I too am trying to decide what to chelate with. I was wondering if you would educate me about the info you have acquired on DMPS chelation. I am "in the dark" as to detailed info on DMPS. Any info you have on DMPS would be gratefully appreciated. I'm sorry to report that I've never heard of PCA-Rx oral chelation. However, be careful about alternative or homeopathic chelators because some are still in the clinical trial stages and side effects are unknown, also they want you to sign a liability release form so that the representative of the chelator will NOT be responsible for any negative or disasterous health effects that could occur when taking unknown chelators.
Roxane