[manishoo]

In the Abstract section it is shown that 20 micrograms does not increase BDNF levels after 2 hours, as opposed to 5 micrograms. It is shown however that it increases after 4 hours. That was a little confusing

[mplanchard]

That’s true. 20 ug is still quite a low dose though. People taking LSD for recreational purposes will generally take somewhere from 100-500 ug. A “hit” is generally 100-200 ug.

I don’t think their research allows us to infer anything about BDNF response at these levels, which is what I (possibly mistakenly) assumed you were asking about.

[unreal37]

And 10 micrograms does not increase it. So 5 and 20 does, but 10 does not?

[uxp100]

Or "there is no evidence" 10 ug does.