Enoxaparin (Lovenox), or low molecular weight heparin, is an anticoagulant. Anticoagulants are medications prescribed specifically to prevent and treat the formation of clots within blood vessels, also called thrombosis.

Enoxaparin is given by a subcutaneous injection. A subcutaneous injection is an injection into the tissue just below the skin, similar to an insulin injection. The injections can be given in the legs, arms or abdomen. It comes in a vial or pre-filled syringe form.