Willow Toxicology Consulting

Willow Toxicology Consulting provides expert nonclinical consulting services for pharmaceutical and biotech companies, with particular specialization in inhalation toxicology as well as broad experience across oncology, inflammation, cardiovascular, endocrine, and neurological areas. The firm works with a wide range of therapeutic modalities including small molecules, monoclonal antibodies (and derivatives), proteins, and oligonucleotides. Founded by Dr. Mark Osier in California in late 2022, it operates as an independent consultancy rather than a product or platform company—it does not develop its own drugs or maintain a clinical-stage pipeline. For more information see their website at willowtoxicology.com.