Ketamine, is a grainy white or light brown powder that can be snorted, taken orally, or injected as a liquid, and its effects range from relaxation and a dream-like state to confusion, nausea, and hallucinations. Regular and long-term use can lead to severe health issues like k-cramps, memory problems, depression, and irreversible damage to the kidneys and bladder, along with the risks of addiction, dependence, and unknown effects due to it often being cut with other substances.