Heidi C. O’Neill, PhD, DABT

 honeill@intertox.com 

Heidi O’Neill, PhD, DABT, joined Intertox in 2024 and currently works as a senior toxicologist. She has studied the effects of various chemicals as both pharmacological therapeutics that may benefit and as toxicants that may pose a threat to human health for more than 20 years.

Dr. O’Neill has particular experience in:

• Evaluating the health risks of flavoring compounds in oral/food products and inhalation devices;
• Evaluating the health risks of solvents, organophosphates, and pesticides;
• Preparation of FDA submissions for consumer products (inhaled and oral nicotine products);
• Providing scientific litigation support;
• Conducting product stewardship assessments for chemical compounds;
• Conducting toxicological evaluations to support extractable/leachable chemicals (E&T) assessment;

Over the last 4 ½ years, Dr. O’Neill has focused on human health risk assessment for consumer products (tobacco products, cannabis vape products, food, and personal care products) as well as in an industrial setting for pharmaceutical products. She also has extensive experience assisting companies with FDA regulatory submissions for tobacco product, both oral and inhaled.  She also has experience providing expert toxicological analyses to support legal cases. Dr. O’Neill has also assisted with developing the basis of an SDS screening system to build a database for go/ no go decisions for worker safety at a large food company.

• Ph.D., Toxicology,  University of Colorado School of Medicine
• B.S., Psychology, University of Colorado, Denver
• Certified Diplomate of the American Board of Toxicology (DABT).