This is a medication that thins the blood. It helps prevent blood clots from forming in the veins and treats blood clots already present in the veins by preventing the blood clot from extending or getting larger. LMWH is generally used for only a short period of time for anticoagulation (blood thinning), while coumadin (a blood thinner in pill form) is for longer term anticoagulation.

LMWH can be given once or twice a day by a simple injection under the skin. The patient or family member can be taught to give the injection. The use of LMWH has allowed patients with blood clots to be treated at home, or with only a short hospital stay in some cases.

The major side effect associated with LMWH, as with any blood thinner, is bleeding. You must notify your physician if you have any unusual bleeding, for example:

• heavy nosebleeds
• bleeding gums
• vomiting blood
• blood in bowel movements
• heavy vaginal bleeding.

LMWH can cause local irritation or inflammation (tenderness and redness) at the injection site. Call your provider if you develop any generalized rash or reaction.

You should avoid the use of any other medications that may increase your risk of bleeding while you are on LMWH. This includes aspirin, nonsteroidal anti-inflammatory medications (ibuprofen, naproxen, etc.), COX II Inhibitors, as well as some herbal medications or supplements that can cause blood thinning. Always consult your provider before you begin any new medication, including any over the counter medications. Notify all of your medical providers (dentist, podiatrist, gynecologist, etc.) that you are on a blood thinning medication.