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Advancing COVID-19 care through research — and your participation.

  • Description: A multicenter, open-label, randomized Phase IIa study to evaluate the safety, efficacy, and pharmacokinetics of drug 83-0060 compared with standard therapy (Nirmatrelvir-Ritonavir / Paxlovid) in non-hospitalized adults with mild to moderate COVID-19.

  • Geography: Australia, Taiwan, South Korea, Uzbekistan

  • Sponsor: Trawsfynydd AU Pty Ltd (Australia)

  • Principal Investigator for Sponsor: Dr. Robert Redfield, MD, PhD

About the study

  • A novel small-molecule antiviral targeting the SARS-CoV-2 M-pro enzyme

  • Does not require ritonavir

  • Good tolerability and safety based on early data

What is the investigational product?



Are you eligible?

  • Eligible if:

    • Adult (≥18 years) with confirmed SARS-CoV-2 infection (PCR or rapid test) within days before starting treatment

    • COVID-19 symptoms began no more than 5 days before enrollment

    • Mild or moderate disease (no hospitalization or oxygen therapy required)

    • Agrees to comply with study visits, procedures, and use reliable contraception (if applicable)

  • Not eligible if:

    • Requires hospitalization or intensive oxygen therapy

    • Has severe liver or kidney impairment

    • Has active viral infections (HBV, HCV, HIV) or other systemic infections

    • Taking medications incompatible with Nirmatrelvir-Ritonavir


What to expect

Total duration: ~4 weeks

  1. Screening & baseline tests

    Eligibility review and initial health checks

  2. 5–10 days of treatment

    Take the study medication as directed

  3. Online visits

    Check-ins with the study team via telehealth

  4. Blood sampling (optional)

    Helps researchers understand how the medication works

  5. Final visit

    Wrap-up and final assessments


Benefits and safety

Why participate?

  • Medical supervision

  • Contribution to the development of new COVID-19 therapies

  • Free tests and medications

  • Possible compensation

  • Voluntary participation


Study locations

In-person or remote

  • Countries: Australia, Taiwan, South Korea, Uzbekistan

  • Remote participation possible via telehealth

List of centers by country

Want to know if you qualify?

Take the eligibility survey
Contact study coordinator