When teaching my nursing students I have implemented a new step in the medication process.  This is for them to compare the allergies of their patient with all medications ordered for the patient.  This allows them to evaluate if the allergen is contained in any of the medications.  For example:  Tylenol # 3 ......... may be ordered but the novice nurse could overlook that that means the medication contains Codiene.  This may seem a little more tedious but it does increase the safety for the patient.  This is a change by adding a step into the medication administration process.