Enoxaparin
"Overall, this medicine got me out of the hospital in one day with a large clot in my calf.  Much better than the IV drip option.  Shots in stomach aren't too bad if you go slow...let the medicine work its way in slowly.  I did experience small bruising at each shot location, and significant abdominal muscle pain.  The muscle pain was a unique side effect from all the sites I searched, but I was very careful not to inject into a muscle."