A new medicine for snakebite poisoning

Development of Intravenous Varespladib, a Phospholipase A2 Inhibitor, for the Treatment of Snakebite Envenoming

NIH-funded research Ophirex, INC. · NIH-11193476

This project is creating an intravenous medicine called varespladib to help people who have been bitten by venomous snakes.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionOphirex, INC. NIH-funded
Lab location1 site (Corte Madera, United States)
Project IDNIH-11193476 on NIH RePORTER

What this research studies

Snake venom contains harmful proteins called sPLA2 that cause severe damage like paralysis, bleeding problems, and organ injury. Current treatments, called antivenoms, don't always work well against these specific proteins. This research aims to develop a new medicine, varespladib, which directly blocks these sPLA2 proteins. Early studies in animals show that varespladib can protect against lethal snakebites, even when antivenom is no longer effective, and it may work even better when combined with antivenom.

Who could benefit from this research

Good fit: This research is ultimately for individuals who have suffered a venomous snakebite and are experiencing its toxic effects.

Not a fit: Patients who have not been bitten by a venomous snake or whose symptoms are not related to sPLA2 toxins may not receive benefit.

Why it matters

Potential benefit: If successful, this new medicine could significantly reduce the severe health problems and deaths caused by snakebite poisoning worldwide.

How similar studies have performed: Experimental studies in animals have shown significant improvements with sPLA2 inhibition, and varespladib has rescued mice and pigs from lethal envenoming.

Where this research is happening

Corte Madera, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.