It's easy to get scattering when using praziquentel because this drug is going to cause spasm of the worm muscle. Recently I took praquentel+albendazole+ piperazine and did not have strong scattering like what happened in the past. I think this may be useful information if you want to take praziquentel. However I am not sure about the interaction of piperatine to other drugs such as ivermection. I know some of the interaction will cancel the effect of the drug.