Does anyone know if meclizine 25mg tabs will work as a deworming agent in an adult human system? I found that our cat has worms and I am deworming our family :o) yipee. I recently fainted, hit my head, and have positional vertigo and was prescribed the meclizine. I found that the meclizine and the dewormer for the cat have the same ingredient, piperazine. Any help is appreciated!