Codeine is a very drastic drugs, therefore learn carefully all contraindications to avoid adverse reactions. Don’t take this drug if at you have ever experienced: allergy reactions to Codeine or to any narcotic analgesic, central nervous system diseases or head injuries, emphysema, asthma or other lung diseases as well as you have cardiovascular diseases, liver or kidneys disorders, alcohol abuse or narcotic drug addiction.

Inform your doctor if you use any over-the-counter drugs, such as aspirin, herbs, vitamins and other medications. Limit your activity related to attention and concentration.