Can someone give a detailed explanation of Clexane, Warfarin, and Frusimide?

Hi,

I'm a student nurse in Australia, and I'm trying to find out what the "life-cycle" of the following three drugs are:

1. Clexane by S/C injection(also known as Lovenox or Enoxaparin Sodium) - anticoagulant/antithrombitic
2. Warfarin orally- anticoagulant/antihrombitic
3. Topical GTN patches (Glyceryl trinitrate)

I particularly need help regarding what actually happens to these medications once they get INTO the body. For example, the step-by-step process by which the medication is absorbed (how and where), metabolised (how and where), and then excreted (how). I have been researching for these details for the last 3 hours, but with little results!!
:urgycld:

Oh, dear, maybe its just me, [sigh], but I've looked on the internet, in pharmacology books, in MIMS, etc... but not much luck.

Thanks in advance everyone!!

I can't tell you all how much I appreciate help - I would rather be humble and ask, then just guess it myself!! (besides, there's no room for guessing with medications, you have to either get it "RIGHT" or "RIGHT" with pts.)

lsebeg: So if anyone is willing to help me out - THANKS SOOOO MUCH !!!!