"Even if that were true - which no one knows- then a 5 day IV regimen is somewhat impractical for prophylaxis."
This is true. It is why: "The Company also plans to seek additional clinical development support from the NIH Antiviral Program for Pandemics (APP). Brilacidin for prophylactic use, including assessing Brilacidin in pre-clinical animal models, is of particular interest due to Brilacidin's blocking and neutralizing antiviral properties and industry investment in developing intranasal-targeted, direct-acting antivirals. Preliminary Brilacidin formulation work for inhaled delivery has been conducted, with the NIH APP a potential avenue to expand on this work, along with exploring the subcutaneous administration of Brilacidin, which has greater than 70 percent bioavailability via this route of administration." https://www.bloomberg.com/press-releases/2022-03-07/innovation-pharmaceuticals-reports-additional-findings-based-on-review-of-brilacidin-phase-2-covid-19-trial-results-an