Fenbendazole tablets are commonly used to treat roundworm infections in both humans and animals. Roundworms, also known as nematodes, are a type of parasitic worm that can infect the intestines of humans and animals, causing symptoms such as abdominal pain, diarrhea, nausea, and fatigue. Fenbendazole works by disrupting the metabolism of the roundworms, ultimately leading to their death. It is important to follow the prescribed dosage and treatment regimen when using fenbendazole to effectively eliminate roundworm infections. Additionally, proper hygiene practices and sanitation measures are essential to prevent re-infection and the spread of roundworms to others.