All Natural Herbs for Horses Drinking Chlorinated Water Help improve immune systems strength and liver control in horses drinking chlorinated water with a variety of natural herbs created exclusively by Silver Lining Herbs. Although it’s been argued time and again, there are in fact negative effects that result from a horse drinking treated water. Our natural supplements for horses can help reduce the effects of drinking chlorinated water. Our quality blends of fine equine products come are used and come recommended by world-renowned veterinarians, rodeo champions. Additionally, they carry with them the NASC Quality Seal, which means we meet or exceed their quality standards.