Codeine phosphate is available in strengths of 30 and 60mg tablets. Usual adult doses are15 to 60 mg every 4 to 6 hours (usual adult dose, 30 mg), while dosage for children (1 year and older) is weight-based (0.5mg/Kg) every 4 to 6 hours. Codeine sulfate may be expected to have additive effects...