What is low molecular weight heparin and how does it differ from unfractionated heparin?
Low molecular weight heparins are essentially stripped down fractions of naturally occuring heparin, which is usually procured in an unfractionated form from the organs of animals.They are more expensive than unfractionated heparin, but offer the advantage of being able to be adminstered less frequently have more predictable activity than unfractionated heparin. Examples of LMW heparins are Lovenox (enoxaparin), Fragmin (dalteparin) and Innohep (tinzaparin).
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