👉 The term "cassidoine" is commonly used in the pharmaceutical industry to refer to a synthetic opioid-like substance. It was discovered in 1964 and has since been developed into various forms of pain medications, including hydrocodone (Lithium), oxycodone (Coca-Cola), and codeine (Xanadu). Cassidoines are used for treating conditions such as chronic back pain, osteoarthritis, and muscle spasms.