I am still researching the causes and i've no evidence, BUT: I had a blackout with a small delirium before falling asleep like a rock few days a go, my gf said I was saying fucked up things like i am walking on the moon and such.
I've smoked approx 1 mg of Iso Butyr Fentanyl (cut with mannitol) in my glass pipe - I am researching it since the last week and this dosage has been always safe and with short legs.
Then i've smoked, always on my glass pipe, some fresh opium from Iran (pretty strong opium). All fine. Then I've smoked again after 20-30 minutes more 1.5 mg IBF. It COULD be i've put more, but for sure not more than 2-2.5mg (and I used to smoked this quantity already a few times) - and then it happened this blackout/delirium.
I've really no clues what else could it be, since I had days taking the same amount of IBF, this day the only difference was I smoked Opium.
so either it's really a "dangerous" combination, or I had bad luck and my IBF Mannitol mixed had maybe a "stone" that didn't cut properly and the blackout was caused from this instead from the opium combination.
I'll keep investigating.