how do they work

I have a question.
Can someone tell me please how these medications are working?

I understand that Albendazole/Fenbendazole - stop with absorption of glucose

Nitoxamide - messes up with worm's metabolism

Ivemoctrin - paralyzes

Why would you take ivemoctrin for large worms? It will paralyze it for a little while and then they will go to normal life.

I am just trying to understand these medications.