American and Korean scientists have found that heparin, which is part of seaweed, blocks the new coronavirus better than Remdesivir, the main drug for COVID-19 used in the United States. The results of the study are published in the journal Cell Discovery.
In order to enter a human cell, the SARS-CoV-2 virus must hook its spike protein onto the ACE2 receptor on its surface. But you can send a decoy molecule of the same shape to the virus, and it will bind to it, and then, trapped, without the possibility of replication, will eventually collapse naturally.