Clearly, ingesting this material is not good for the cat.
Not only can your cat ingest fleas while he cleans himself, but fleas often carry tapeworms - another nuisance your cat can pick up by ingesting a flea.
Health care practitioners recommend adding five drops of black cohosh tincture to a cup of water or tea, and ingesting it once or twice a day.
Directly ingesting the compound also increases the risk of toxicity.
Purchase the root in dried or powdered form from a reputable retailer to be sure you are ingesting the correct plant.