Codeine 60 mg is a stronger opioid pain reliever that's typically used to treat moderate to moderately severe pain when lower doses just aren't cutting it. It works by attaching to opioid receptors in the brain and spinal cord, which helps to dull the pain and bring some relief. However, because it's quite potent, Codeine 60 mg comes with a greater risk of side effects like drowsiness, constipation, respiratory issues, and even dependence.