First off you did the right thing. Under your license if you misunderstand an order you are expected to clarify it with your supervising nurse and they the doctor, as happened. But as this is not an unheard-of situation I will offer you a few tidbits of education. Warfarin is probably one of the most complicated common drugs you will ever deal with. It is usual to see the medication have different doses on different days for example the correct order may state Take 5 mg on Tuesday and Friday and take 2.5mg each on Wednesday, Thursday, Saturday, Sunday, and Monday. It is up to the physician and or nurse writing the order to make sure it is clearly understandable to any Ma or patient what medication should be taken and on which day. Also,as in most other businesses, regardless of where the fault actually lies, everyone will find fault with those beneath them on the ladder. If you hope to be a future leader in nursing I would take this experience to heart thann rather than blame those below you when something goes wrong you can ask, what can I do to better prepare, help, or educate my staff on waysto prevent this from happening in the future...