Colostrum is also known as the first milk or mother’s milk. It is produced by cows and even human mothers. It is very nutritious and has almost every nutrient. Cow colostrum is used as one of the main ingredient in Planet Ayurveda's Immune Booster Capsules. It is a wonderful combination of various useful herbs that are mentioned in Ayurvedic texts for increasing immunity as well as for providing other health benefits too.