Ketamine is a powerful anesthetic used primarily in the veterinary arena for anesthesia of farm animals during routine surgery. General anesthetics are normally used to induce a loss of consciousness before and during surgical procedures, but Ketamine has also been used in humans for dentistry, pediatric burn cases and experimental psychotherapy. Recently, there have been numerous reports about the use of Ketamine as a recreational drug under the aliases: Vitamin K, Special K, Ket, and K. Side effects include abdominal pain, fever, headache, loss of appetite, nausea, pale skin, and weight loss. Use of this drug without medical supervision, especially in combination with other drugs or alcohol, should be avoided.