Ketamine as a psychedelic:
On it’s own - don’t make me fucking laugh, it causes AMNESIA! In high enough doses to have a proper psychedelic experience you are gonna remember fuck all. In small doses it can be fun - distortions in your perception of space and time, along with a mental and body “high” with a sense of feeling relaxed (much like getting drunk - but NEVER take it with alcohol! EVER!). If you were to use it intravenous with a very carefully measured dose you might be able to get a psychedelic experience that you can remember, but snorting it is like riding a bucking bull, blindfolded with your arms tied behind your back.
Combined with other substances is another story, that’s when weird shit starts to happen. Possibly the most interesting aspect is it’s dissociative effect, which can help with trip anxiety. However it won’t save you from a bad trip - trust me on that one!!!
The best uses for ketamine are medical; as a general anaesthetic that doesn’t effect the respiratory system, and as a rapid acting anti-depressant.
Used in small doses you can bounce around a party having fun, but don’t expect to find enlightenment with this substance.