Be careful with ketamine (i mean, be careful with all drugs). But ketamine has it’s risks, as you probably noticed motor function impairment can become pronounced.

High doses can render you unconcious, during which there is a risk eg. associated nausea could lead to vomiting, ie. potential airway obstruction. If there’s a risk of going under (khole) always lay on your side with head & neck supported (never on your back or stomach) & ideally have a sitter.

Can also be fatal when mixed with other drugs, check erowid.org etc for dangerous combos