Nitrous can be psychologically addictive. While rare, many people have become addicted to nitrous and other dissociatives. The regular use of nitrous can cause long-lasting numbness in the extremities and other neurological problems. Ketamine usually comes as a liquid in small pharmaceutical bottles, and is most often cooked into a white powder for snorting. At lower doses it has a mild, dreamy feeling similar to nitrous oxide.
Users report feeling floaty and slightly outside their body.
Numbness in the extremities is also common. Many users find the experience spiritually significant , while others find it frightening. While in a K-hole it is very difficult to move. People usually remain seated or lying down during the experience. The effect comes on within about 5 to 10 minutes.