Aman, if your in the UK by chance you won't be able to get DMPS at all. I've tried myself and you cannot get it in the UK. Your best bet will be DMSA. My local G.P's don't even know what DMPS or DMSA is. DMPS has to be administered by a licensed medical doctor in both the UK & US. There are no doctors that I know of who can perscribe DMPS for oral administration in the UK. The NHS as far as I know only uses EDTA for acute mercury exposure, that's it!. C