Of course too much of anything can be bad. As far as long term effects check out our scientific article database. What we say should not be taken with a grain of salt some people here extensively research this subject. Of course there are morons on the internet who say all kinds of BS but some people try to spread factual good information.

I don't think you understand how psychedelic drugs effect the brain. Many are NOT neurotoxic. There is NO evidence that DMT is neurotoxic in the doses that most people consume. Its also an endogenous molecule in your body so if it was neurotoxic that would be kind of weird. I question the accuracy of this statement to the fullest.