Hey, My name is Lorreen and I am new here! I am pursing a Practical Nursing diploma and I would like some help on my drug card. I did my drug card on wafarin, and I had a hard time understanding how to word the mechanism of action for wafarin. The professor didn't really offer any help so I was wondering if anyone could explain to me how to write out one. I know that wafarin is a blood thinner that should be not be taken in combination with heparin, or aspirin. I was mistaken that this was a mechanism of action. What would I write as my moa for wafarin?