Just about approaching sober - had to resort to using 25mg Librium and 250mg of Codeine.
I can barely even comprehend the experience, my body feels like a car crash, my brain feels fried. Still finding it difficult to elucidate so apologies.
My memory is slipping quickly so I want to detail the important things while I can.
Dose: 150mg total (50mg bomb first, wasn't stimulating, opposite if anything, so added another at 1hr in, another at 2hr in). Felt 'removed' but chatty, comedy was hilarious, sound distortion developed rapidly until every sound became offensively loud and warped. Realised that this wasn't normal but couldn't comprehend anything further ('this is not right'.... but no further expansion), felt like my body was an 'extra'; only my mind existed, massive thought acceleration which became deeper and deeper until it reached the whole 'questioning the fabric of reality' stage - feeling like a 4th dimensional entity looking at the 3rd dimensional Universe fall away to reveal the 2nd and 1st dimensions (I can't explain properly it as language doesn't seem to suffice). The '1st dimension' consisted of nothing more than the fundamental principles of the Universe; Time, Gravity, Entropy, Enthalpy and, worryingly, Chaos. The 2nd included Light and Darkness, Existence and Emptiness, Heat and Cold.
Then, suddenly, I'd 'come back to reality', so to speak, and realise I'd been slumped in ridiculous positions. I attempted to calculate how long I'd been in 'Hyperspace' but found the concept of time so alien and confusing, a worthless, baseless construct as time did not exist.
I continued to jump between Hyperspace and warped reality, trying to comprehend the very nature of the constructs of the 1st Dimension - I never reached the 'Universal Truth/Answer' that I was convinced would 'unlock the Universe'. An entity in the form of a white orb/light attempted to guide me until I/my Ego shattered into an undetermined amount of entities, each operating in a different dimension of thought. Once I became 'me' again and saw the real world, I realised my entire body was contorted to such a degree I must have resembled a gymnastic Hentai fan's fantasy. Sweat soaked and confused: I sat up, I was in my bedroom, but every object had a sinister look to it, a menacing anthropomorphosised demeanour. I lay in bed, fearful, broken, amazed, bewildered, and confused for around 2 hours until it hit me that I had supposedly taken MPA.
EDIT: I must add: this reads like an enjoyable, 'spiritual' experience - it was not.
Every second was tainted by complete fear and confusion. Resting BPM at 1.5hr was 134, I don't even want to imagine how high it went at the peak. Blood pressure spiked to the point my entire body was vibrating. Severe vasoconstriction that turned not just my knees purple, but every joint in my body. Along with numbness developing in the extremeties that I am so glad I noticed during one of the brief periods of normalcy.
I have never experienced anything like it.
~18 hours of main effects, I feel poisoned even now more than 24 hours after dosing.
Worse than even the most brutal serotonergic comedown, almost every muscle feels torn, particularly in the torso, every joint aches, my head is pounding. Food is impossible, water is a struggle.
I can't think of a single dissociative with such a long duration, though I am well aware of 2 psychedelics that match the duration - conveniently, one of which is very soon to be illegal and possessing MAOI activity.
I consider myself lucky I am able to write this post; this could have ended so much worse.
I tried to phone the Emergency services myself but was far too inebriated to work the phone.