Nutri-Selenium Mixtures: Feed additives for pets to improve fertility and immunity. Target animals: Cats, dogs, parrots, and canaries. Purpose of use: A rich source of vitamin E and selenium. Improves production quality. Improves fertility and natural immunity. Directions for use: Mix with drinking water for 3-5 consecutive days. 1 ml/50 ml of drinking water Or 20 drops/50 ml of drinking water.