No. This product does not contain anything from its surroundings. The patent associated with it heats the zeolite to 900 degrees farenheit to separate all compounds and purify the structure. There might be other products on the market that don't have this patent, so I would do due diligence and make sure you check them out carefully if they are cheaper, etc. But, there are many doctors who are on board with this product and bringing it to their patients now and the FDA has given it a GRAS (generally regarded as safe) rating, which wouldn't happen if it had toxins and metals in it already. Besides, if it was full of heavy metals already, which it isn't, it wouldn't be able to absorb any additional metals, which it does based on the urine analysis reports I have that show heavy metals leaving the patient's body. I'm telling you, it's an amazing, life changing and sometimes life saving product. Two women I personally know have come back from terminal cancer on this product. They had nothing to lose in trying it, and now they are using it for prevention and sharing it with others also. I use it and have seen an amazing improvement in any/all ailments/symptoms I had.