Codeine Sulphate 15 mg Tablet is used to relieve pain. It contains codeine, which works by preventing the transmission of pain signals along the nerves to the brain. In some cases, this medicine may cause side effects such as dizziness, drowsiness, headache, nausea, constipation, vomiting, dry mouth, and abdominal pain. Before taking this medicine, inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.