Parasitic helminths must maintain an appropriate feeding site, and nematodes and trematodes must actively ingest and move food through their digestive tract to maintain an appropriate energy state, this requires proper neuromuscular co-ordination. The pharmacological basis of the treatment of helminthes generally involves interference with one or more of these functions that is destruction of energy process and subsequent starvation of the parasite or neuromuscular co-ordination leading to paralysis of the parasite and its subsequent expulsion. Benzimidazole acts in the same manner.

• Inhibition of enzyme in the glycolytic pathway.
• Inhibiting the breakdown of excitatory neurotransmitters by mimicking the action of the excitatory transmitter.