You need to procure pure DMT from a trusted source.
The only way you can be sure to have relativly pure DMT is to extract it yourself. This is the consensus at least among senior members here. The rationale behind this is to undermine the drug market, to empower the individual and to make sure that DMT does not become a commodity but something one has to "earn" by following relatively safe & sound extraction procedures. Decentralisation is also very important to many members - we do not want to rely on another owsley and - there isn't a point, really.
About your concerns: It isn't like you portray it. Teks are constantly advanced and supervised by real chemists, moderators and other members are making sure to spot bad extraction practice and are eager to help correcting errors. Education is one of the main goals of the nexus and health concerns are taken seriously. In fact, this is one of the reasons why potentially dangerous synthesis techniques can'T be found on here - and effort to protect the layman.
That being said, modern extraction procedures are fairly safe, if you aren't dumb and can read.
