Can Fenbendazole Medicine Change a Dog’s Behavior? angielski

In most cases, fenbendazole 222 does not cause significant behavior changes in dogs. It is a commonly used deworming medication and is generally well tolerated when given at the correct dose. However, mild and temporary behavior changes can occur in some dogs during or shortly after treatment.

Some dogs may seem slightly tired, less playful, or quieter than usual for a short time. This is often linked not to the medicine itself, but to the body reacting as intestinal parasites die and are expelled. In dogs with a heavy worm burden, this process can temporarily affect energy levels or appetite.

Occasionally, dogs may show mild gastrointestinal discomfort, such as soft stools or nausea, which can indirectly affect behavior (for example, reduced activity or restlessness). These effects usually resolve within 24–48 hours.