Get emergency medical help if you have signs of an allergic reaction: hives; itching or burning skin; difficult breathing; swelling of your face, lips, tongue, or throat.
Also seek emergency medical attention if you have symptoms of a spinal blood clot: back pain, numbness or muscle weakness in your lower body, or loss of bladder or bowel control.
Call your doctor at once if you have:
unusual bleeding, or any bleeding that will not stop;
easy bruising, purple or red spots under your skin;
nosebleeds, bleeding gums;
abnormal vaginal bleeding, blood in your urine or stools;
coughing up blood or vomit that looks like coffee grounds;
signs of bleeding in the brain--sudden weakness (especially on one side of the body), sudden severe headache, problems with speech or vision; or
low red blood cells (anemia)--pale skin, unusual tiredness, feeling light-headed or short of breath, cold hands and feet.
Common side effects may include:
nausea, diarrhea;
anemia;
confusion; or
pain, bruising, redness, or irritation where the medicine was injected.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Enoxaparin side effects (more detail)
