Q: Glyphosate in Round-up is listed as the "Active" ingredient, toxicity level III of IV (IV being the least toxic). However, the surfactants mixed with Glyphosate in the Round-up product greatly increase the toxicity level. Is this correct? Question Submitted By: Maria Alicia Sloan Notification Preferences +1 0 -1 Thank you for your question. One of our experts will get back to you soon. Topic: Safety, Health, and Nutrition 0 Comments | Add Comment Log in or register to post comments To post a comment, please login.