Like protein derived from cow’s milk, the two major proteins in goat’s milk are casein and whey. Some people are allergic to a specific casein protein in cow’s milk; this has prompted the recent development of goat’s milk protein powders.

Also, most of these protein powders come from goats that are not fed pesticides, herbicides, growth hormones or antibiotics.

Another advantage is that the casein in goat’s milk is easier and faster to digest than the casein in cow’s milk. Goat’s milk protein powders are good to use before and after workouts.

One warning about goat’s milk-derived protein powders: most are not flavored, and some people find them difficult to tolerate without added flavors.

Goat’s Milk Protein Powder Most goat’s milk protein powders are manufactured in a fashion similar to MPC. Therefore, their protein content can vary. Most contain about 65% protein, with the rest being fat and carbs.

Goat Whey Protein Powder Most goat whey protein powders are manufactured by dehydrating the whey after it is separated from the casein. Unlike whey protein powder from cow’s milk, this type of whey is only 15-20% protein, with the rest being carbs.

Therefore, it’s not the greatest protein supplement to use for gaining muscle. However, goat whey protein powder is very high in minerals. [source: Flex]