Durvet High Performance Poultry Pak is a water-soluble vitamin and electrolytes mix for starting poultry during periods of reduced feed intake. Mix fresh solution daily. For water medicator use, add the following amount to 2 gallons stock solution when medicator is set to meter at the rate of 1 oz/gallon: Reduced feed intake – one 4 oz packet; Extreme conditions – two 4 oz packets. Package features directions in English and Spanish.