Anything similar to Nitrous Oxide?

[RoastedMocha]

I've always enjoyed the sensation of Nitrous, however the fact it lasts for only 30 seconds or so makes it kinda a joke imo. I was curious if there was any drug that produces a similar feeling but for longer? Or the closest thing to it.

 

[Jabberwocky]

Ketamine produces a somewhat similar experience in low to moderate doses but it's not like it's the same at all, it's just that some of the effects are comparable.
If you like N2O on it's own then you will most likely like Ketamine too I think.

 

[ComfortablyNumb95]

Ketamine/DXM?