A combination of herbs to help maintain an environment which is not conducive to parasites and worms. Herbal Wormer contains a proprietary blend of herbs, including garlic, cascara, clove, kelp, sage, slippery elm, wormwood, chaparral, and juniper. Feed 1 scoop daily for 10 days for a 1000 - 1200 lb. horse. Herbal blend.