If you want to believe in this thats fine, but realise its a belief, none of this is backed in any way shape or form by science its a case of a man using big words to sell snake oil. Its just a form of religion. They are acid/base extractions, one of the simpler chemical processes performed thousands of times a day and no mystery to man =p Thats not magic. I think people who believe in souls like myself use the non-physical loophole so we don't have to face the facts haha. Any year 11 physics textbook can answer that. We know exactly how these SSRI's etc work, thats because clever people spent a lot of time researching them and publishing their research for other clever people to check. Their effectiveness is a completely different issue. They are extremely overprescribed and can be dangerous. I would probably recomend them for 1/5th of the people that use them.