Dipipanone is in itself a close relative of methadone. Now people put
down methadone but apparently when you shoot it, it's rather good. But
the special magic ingredient is cyclizine, which is an antihistamine
(officially put in the pills to stop nausea). It causes an amazing
flash. When the potential for abuse came to light, the tablets were put
on a special licence. There are only 3 drugs on the licence:
diamorphine, cocaine, dipipanone but it IS still prescribed in the UK.
People wishing to simulate the effect would crush methadone tablets
with Valoid or Marezine (OTC motion-sickness pills containing
cyclizine) and shoot that. People taking oral methadone apparently
still get a hit if they shoot just cyclizine on top of it. There is a
lot of research on the internet. Apparently, it boosts all opiates.
It's also available on the internet without a prescription. In the US,
Ts & blues was the same sort of thing. Tripelennamine in conjunction
with Talwin. Then they reformulated Talwin with naloxone so you can't
shoot it.
Recent reports say that even humble diphenhydramine (Nyquil) will boost
the hit if swallowed 45 minutes beforehand. If you could filter it from
those big, bulky tablets then I would bet that a shot of this mixed
with H would be just great.
Now, the downside. Some people can 'chip' opiate without trouble, but
the longer you chip, the more likely you are to become addicted. If you
think that people like Dave Gahan, John Lennon, William S. Burroughs,
Miles Davis who didn't die from the stuff, all said it was bad news.
Burroughs lived a LONG time but was still on methadone until the day he
died.
Heroin is like religion, it gets people at their weakest point, when
they feel like there is nowhere else to turn OR they have no self
respect.
I will give you all the facts, but having tried it & tried DMT, I
would say DMT is better, safer & non-addictive.

Take care.