Codeine is a group of medications that are called opioids. It is an opioid pain relief medication that is used to treat pain and post-surgery or injury pain. It works in the central nervous system to control the pain signal to the body. Buy Codeine Online, it also helps reduce anxiety and stress caused by the pain. It is prescribed by doctors to relieve moderate pain. It also helps to reduce coughing by controlling the brain activity, which causes coughing. Codeine tablets and capsules work within one to two hours.