There's also therapy with LSD.
It then becomes infuriating that a an ideology towards drug control that seems to be universally regarded by informed people to be misguided and causing more harm than simply doing nothing, is still interfering with our collective ability to evaluate these substances in an objective way.
I think this substance is useful, but its usage is best kept on a (bi-)monthly basis so you have time to recover between sessions.
A better candidate than MDMA for microdosing with similar effect would be 2-CB. It does not deplete any of your serotonin, and you recover from it in a couple of days, even after massive doses.
A couple of days doesn't sound great tbh.
Last time I used it I stayed comfortably at home. The day after I could go hiking in the Alps without any problem.
Anyway, the tiredness you feel after using 2-CB is nowhere near as close to that you experience with MDMA, which may last for weeks. Which leads me to think 2-CB would be better for microdosing.
Also this is in no way me advocating 2-CB has being completely safe. Most people who tried it deem it so, but as of yet few researches have been conducted on that substance.