Don't try this at home. This probably applies if you get the actual toad stuff because it can hardly be pure but with pure freebase 5-MeO-DMT (which is a great thing to have) anything above 20 mg is dangerous, 50 mg has chances to be lethal.
I have tried about 15 mg (of pure freebase) and it actually had a profound effect. Not only it has "spiritual" sort of effects by giving you a direct experience of non-duality and perfect bliss, it also acts sort of like an awesome antidepressant - try it once and you then feel so much better (and concentration and awareness become so much easier, and anxiety is gone) for weeks after that.
I also microdose every time when I have hard time falling asleep - not only it relieves stress which prevents you from falling asleep, it also makes sleep much more refreshing and satisfying so the fact you didn't have much time to sleep doesn't hurt much any more.