Don't combine with 5-HTP
Well I just tried this for the first time last night. Wow! I don't really know where to start, it's too much to put in to a trip report. A very humbling and therapeautic experience.
All I can say is that it was far more than what I expected. I took 46mg aMT at ~02:00 GMT last night, and I am still feeling residual effects some 21 hours later. My pupils are still like saucers, and I still feel somewhat spaced out. The trip was still going hardcore at t+12:00.
I feel that I had mild serotonin syndrome. I know that that term is used very casually sometimes, I really do, but I wouldn't say it if I didn't think it was such. I have been using 5-HTP daily for several weeks to help restore serotonin imbalance after withdrawing from venlafaxine (effexor). I skipped a dose and took the aMT, believing that the half-life of the 5-HTP would be short enough that it would be out of my system by the time the aMT kicked in. I think I was wrong. The intensity got too much at times, my brain was absolutely exhausted, yet all the serotonin in my brain was forcing me on relentlessly.
What I will say though is that I really needed this trip. I've been wound up so tight recently, feeling so much anger and not knowing how to deal with it even whilst meditating daily. Meditating on aMT was one of the most therapeautic experiences I have ever had. It felt like every cell in my body was unwinding from being scrunched up in negativity.
Rainbows of light were literally pouring out of my body, and I was expressing that love to the whole universe and it was the most positive thing you can imagine. Absolute bliss, joy, happiness. Old blockages in sexual energy between my genitals and my navel were removed, and my body erupted in orgasms of cosmic love energy, healing my whole organism.
And who said this stuff wasn't visual?

Woah. These were some of the most incredible visuals of my life. I can't even begin to describe this. It has been snowing here overnight, and looking outside was indescribable.
Incredible material, but this is not something I could trip on with regularity, it is incredibly taxing on the brain. But it is a very therapeautic tool. I needed to learn to feel true unconditional love again, properly, and this trip was exactly what I needed.
Please do not combine this stuff with 5-HTP - I really believe that there is a possibility there for serotonin syndrome. And I feel quite lucky that it didn't get any more intense than it did.