Buy Codeine 15mg Online For A Pain Relievers Stronger Opioid Drugs, Click to order link and buy now codeine 15 mg tablets. Visit our site bigpharmausa.com and enjoy 20% discount offer and overnight free home delivery available. Codeine 15mg works by binding to opioid receptors in the brain and spinal cord. The dose can be taken every 4 to 6 hours as needed for pain relief.