Is Metronidazole safe to give for nursing cats? My kittens are 3-4 wks old. This is a foster cat. I have heard yes and I have heard no. There were no fecal tests done on the cats stool other than a fecal float. Roundworm eggs were present and cat and kittens were treated for this. Mom has also had advantage multiple. Mom is eating and drinking voraciously and is not vomiting nor does she have blood in her stool. Any advice would be appreciated