3.1 Unfractionated heparin
The porcine UFHs had the greatest antiviral effect against SARS-CoV-2,
with Wockhardt UFH (Clinical Trial batch) having a slightly greater
effect with a mean ND50 value of 12.5 μg/ml when
compared with Celsus UFH (mean ND50 23 μg/ml). The
antiviral activity of bovine UFH (mucosa) was approximately three-fold
lower (ND50, 75 µg/ml) than porcine UFH, whereas UFH
from bovine lung was approximately 50% lower (ND50, 51
μg/ml).