the vet said he does not really care for grapefruit seed extract ! he did say that wormwood , or bene-bacs could not hurt , and like you said not neccessary with some meds ! as it turns out the three gex i brought in have coccidia, and 2 of those have pinworms also
TERRIBLE , but at least they are being treated now ! there was no significant difference in them to point to this , just lucky i guess , that i wanted to get a "checkup" before they breed !