Shipping within the US and Canada takes 24hours and 2 to 3 days to other countries. Ketamine was placed on the list of controlled substances in the US in 1999. Ketamine is used for Inducing anesthesia, which may be lack of feeling before surgery or some procedures that do not require skeletal muscle relaxation. It may also be used for other conditions as prescribed by your doctor. Ketamine is anaesthetic and works in the brain to inhibit painful sensations.