Immunity is an imperative factor for animals as it guarantees a superior wellbeing and development to them. Better immune system provides a better immunity which is helpful in providing a superior resistance from diseases. However, in bad cases this resistance gets influenced because of a few reasons which makes the body vulnerable to various attack of infections or pathogens. Better immunity is achieved in cattle with the best supplementation of feed which provides all types of nutrients that are needed for this. It is influenced by numerous variables like exposure, vaccination, stress etc. To safeguard the body from getting affected by viruses and bacteria there is a need of supplement that improves the immunity. For this we use “Sel-E-Tonic” a natural immunity booster supplement and also stress reliver which can cure all types of symptoms and problems which are attached to this. Its advanced formulation consists natural immunity booster with added advantage of Vitamin-E & Selenium. It benefits the body in many ways.