Harkers Harkavit-Super Plus is a combination of multivitamins, electrolytes and glucose to be added to the drinking water both before and after racing. It helps maintain good health and peak performance in racing pigeons, and is designed to give optimum health and fitness to racing pigeons through the year. It can also be fed to young birds in tiems of stress. Harkers Harkavit-Super Plus is an excellent product to use in hot weather as it will help overcome dehydration, especially in young birds, and should be offered to all birds on return from races, especially when the weather is warm. Harkers Harkavit-Super Plus is the new replacement for the orginal Harkavit-Plus. It is twice the strength, so is used at half the dilution of the original product.