iO Cider Vinegar 4% helps build immunity-fighting bad bacteria, and promote good bacteria. Used as a regular part of feeding, it is believed to assist with arthritis and joint conditions. Apple cider vinegar helps acidify the stomach for optimum digestion. Quick Facts & Benefits: As a natural insect control, Apple Cider Vinegar has been known to cause thiamine (Vitamin B1) to be excreted through the skin, repelling flies and mosquitoes. Optimum levels of B vitamins (particularly B1) in the body seem to discourage bugs. Can also be used for dogs. Dose Rates & Administration Instructions: Horses : 60mL per animal per day Cattle : 250mL per animal per day Active Constituent: Apple Cider Vinegar is prepared from low acid, low tannin dessert apples, which are crushed and then fermented. The product appears cloudy, but settles to form a sediment or curd at the bottom of the container.