Morphine or heroin doesn't do much for me. Have tried many different RoAs and product to. So for me, those two are no good for the nod or even the high.
Oxycodone is king. Though it has to be a high dose for the nod, which I don't use it for. It's too much...
n saying that, Tramadol gives me a wonderful nod near the end stages, mixed with codeine it's great for nodding. That combination wins for me.
if we are going into combinations, the best-ever nod experience I had was when i snorted meth (i dont like stimulants, or meth, but i had some anyway) and did a massive dose of oxycodone (30mg) which is 3x my normal amount about 4 hours later. Meth + oxy should be the true speedball. Could see how addicting that shit would be.