People with weakened immune systems, as well as the very old and the very young, should not take a chance on raw sprouts. Colostrum is secreted by all lactating mammals shortly after giving birth, before milk is produced. It contains many substances that are vital for the growth, immune system, and overall health of newborns. So what's good for newborn calves is not good for newborn humans, let alone adults. Many companies are aggressively marketing supplements of bovine colostrum, claiming that the capsules, powders, and liquids can treat cancer, diabetes, arthritis, and other diseases, as well as build muscle, burn fat, boost athletic performance, improve mood, and slow aging.
Some brands contain vitamins, herbs, and other compounds.
There are even bovine colostrum supplements for pets. There has been little or no research into bovine colostrum supplements for adults. Some preliminary animal studies have found that it may help treat intestinal damage caused by colitis or infection. But that doesn't mean it will help humans in any way. There's no way to know what's really in these supplements.