Excerpt from Toxicology of Herbal Medicines (VET-398)
Western Veterinary Conference 2004
Greg L. Tilford, Herbalist
Animal Essentials, Inc.
Hamilton, MT, USA
........Herbs that may Produce Hepatotoxic Activities if Misused, and have the Potential of Compounding Preexisting Liver Disease:
Avoid internal use of:
Chaparral
Wormwood (Artemesia spp.-esp A. absinthum)
Kava Kava
Pennyroyal
Tansy (toxic, toxic, toxic!)
Comfrey (FDA says "no-- period."
Lavender
Any essential oils--especially in undiluted form!
Use with Caution:
Goldenseal, Oregon grape, or any other plant that contains berberine.
Remember-- once a substance passes through the digestive tract and enters the body, the liver is the first line of defense. The liver is designed to take a great deal of abuse, but too much of anything constitutes the potential for poisoning and impact upon the kidneys.
Herbs that possess neurotoxic principles may compound existing problems of the nervous system:
Wormwood (esp. Artemesia absinthum)
Pennyroyal (toxic to cats-esp. the essential oils)
Parsley seed
Nutmeg (very toxic to cats!)
Cloves (very toxic to cats!)
Damiana (May cause cyanide poisoning-Avoid altogether)
Rosemary (in herb form-maybe. Essential oil may trigger or worsen convulsions)
.......
Excerpt from Clinical Applications of Herbs
Western Veterinary Conference 2002
Susan G. Wynn, DVM Marietta, GA, USA
.......
Parasites
Wormwood (Artemisia annua): an extract of artemisia reduces lesions associated with coccidia in chickens (Allen, 1998)
Berberine containing herbs: (goldenseal, oregon grape): Berberine inhibits growth of giardia and certain species of amoeba (Kaneda, 1991)
Ginger (Zingiber officinale): ginger has been shown to kill the nematode Anisakis, found in fish, which may be why ginger is traditionally served with sushi! (Goto, 1990)
Garlic: whole garlic extract inhibited giardia in vitro with an IC50 at 0.3mg/ml (Harris, 2000), (Ankri, 1999) .
Turmeric (Curcuma longa): extracts of turmeric have shown activity against some nematodes (Kiuchi, 1993).
Pumpkin seed: has been used for tapeworms, and may have approximately 50% efficacy against some species. I haven't had experience with use of this herb, but would suggest ground raw or toasted whole seeds.
Papaya (Carica papaya): papaya latex has shown activity against helminth infection in mice, against bird ascarids, and exhibited 100% kill of ascarids in pigs at a dose of 8gm/kg, and (Satrija, 1995) (Satrija, 1994), and has been suggested to be effective in dogs and cats. The dose used in this study would be difficult to administer to pets.
Indian Long Pepper (Piper longum): An ayurvedic herbal combination containing long pepper significantly reduced giardia numbers in stools of human patients and improved clinical signs associated with the infection (Agarwal, 1997). .......
See next post for a summary
Ian