Beef is a great source of protein. Beef supplements let you avoid the fat and cholesterol from steak and hamburger, but still get the protein from red meat. Beef protein is rich in vitamin A, C, B6, B12, thiamin, riboflavin, niacin, calcium, phosphorus, magnesium, sodium and potassium.onsume beef protein daily to build new muscle tissue.* You should always ingest protein from food sources, but the purity of beef protein powder gives you what you need, when you need it.*. Always check calories per serving to make sure beef protein fits within your daily values.