๐Ÿ›๏ธ Verified NIH Record โ€ข Updated 2026-04-30

A Study of N-acetylcysteine in Patients With COVID-19 Infection (NCT04374461)

Phase II Study of N-acetylcysteine in Severe or Critically Ill Patients With Refractory COVID-19 Infection

๐Ÿ”ต Active, Not Recruiting Phase2 ๐Ÿ’Š Investigational Drug / Biologic Sponsor: Memorial Sloan Kettering Cancer Center

๐Ÿฉบ Plain-English Summary (8th-Grade Level)

The study researchers think that a medication called N-acetylcysteine can help fight the COVID-19 virus by boosting a type of cell in your immune system that attacks infections. By helping your immune system fight the virus, the researchers think that the infection will get better, which could allow the patient to be moved out of the critical care unit or go off a ventilator, or prevent them from moving into a critical care unit or going on a ventilator. The US Food and Drug Administration (FDA) has approved N-acetylcysteine to treat the liver side effects resulting from an overdose of the anti-inflammatory medication Tylenolยฎ (acetaminophen). N-acetylcysteine is also used to loosen the thick mucus in the lungs of people with cystic fibrosis or chronic obstructive pulmonary disease (COPD). This study is the first to test N-acetylcysteine in people with severe COVID-19 infections.

Who can join: Review the eligibility criteria below.

Location: Memorial Sloan Kettering Cancer Center โ€” New York, New York

Age range: 18 Years

๐Ÿงช Interventions in This Study

๐Ÿ“‹ "Do I Qualify?" โ€” 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria โ†—

๐Ÿ“ All Participating Trial Locations (1 Sites)

  • Memorial Sloan Kettering Cancer Center โ€” New York, New York

๐Ÿ“ž Contact the Study Coordinator

Phone: (800) 525-2225

Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.

๐Ÿ’ฐ Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA ยง 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

Explore by condition: All Covid-19 clinical trials

๐Ÿ’ก How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Contact the study coordinator using the phone/email above.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
๐Ÿ›๏ธ View Official NIH Record โ†—