Codeine is a prescription drug used to treat mild to moderate pain. It is an opioid, meaning it works by binding to opioid receptors in the brain and spinal cord, which reduces the perception of pain. Codeine is available in a variety of forms, including tablets, capsules, and oral solutions.
Codeine is a controlled substance in Canada, meaning it is illegal to possess, use, or sell without a prescription. It is important to note that codeine can be addictive and should only be used under the supervision of a doctor.