Dxm offers a sense of ego death and experiencing a sense of death while being alive if you reach a higher dose without actually dying.
Go to erowid and find dosages versus body weight and make sure you're using the right OTC drugs. If it has acetomeniphen then you'll die.
Also, I've had some good trips on this. But I honestly wish I never did it.
I had great experiences but all my friends doing it with me became retarded or suicidal or trans. It's probably unrelated. I ended up doing it the least and I'm coping with random jobs. Who knows what life has in store for me.