Codeine is an opioid medication commonly used for pain relief and cough suppression. It is less potent than some other opioids like morphine or oxycodone. Codeine is often prescribed for mild to moderate pain, particularly in cases where other pain relievers like non-steroidal anti-inflammatory drugs (NSAIDs) are not suitable. It can also be found in over-the-counter cough syrups in some formulations. It's important to use codeine as directed by a healthcare provider since it can cause side effects and has the potential for misuse and dependence, especially when used inappropriately or in high doses.