Celsus: Manufacturer of heparin and heparin-like glycosaminoglycans including Centaxarin (ardeparin sodium). Features scientific background and history.
Centaxarin: Ardeparin sodium. Features history and chemical data.
DrugDigest: Heparin: Information on dosage, usage, side effects, interactions, and drug comparisons for the low molecular weight form of the drug.
Heparin: Full prescribing information from RxList.