Codeine has slightly exciting action on the spinal cord. Its hypnotic action is feeble and uncertain. It is not constipating.

Codeinae Phosphas. Codeine Phosphate

Average dose, gr. 1/2-0.03 Gm.

Codeinae Sulphas. Codeine Sulphate

Average dose, gr. 1/2-0.03 Gm.