Scientific research has confirmed that milk thistle protects the liver from the harmful effects of various other toxins. It protects an animal's liver when exposed to toxic chemicals or potentially harmful drug therapies. Animals that have been on allopathic drugs, heartworm medication, dewormers, vaccinations, anti-convulsive drugs or chemotherapy might benefit from this drug as well.
Milk thistle can also help block the potential liver damaging effects of anesthesia and is often used both before and after surgery in Germany.
Holistic vet Dr. Karen Becker, DVM recommends giving dog's Milk Thistle daily for one week after each Heartworm pill to assist in detoxification.