Rooster Booster Liquid B-12 is a super concentrated liquid vitamin formulated for all classes of poultry, including hens, roosters, chicks, and other backyard fowl. Each fluid ounce delivers a guaranteed level of vitamin B-12 in a palatable base that birds readily accept mixed into feed or drinking water, or given orally with a dose syringe. The formula is intended to support birds during periods of stress and to help stimulate appetite for normal growth. The liquid comes in a 16 oz bottle and should be shaken well before each use. It is formulated for animal use only and is not intended for human consumption. Storage in a cool, dry place away from freezing temperatures helps preserve product quality.