Dairy products refer to foods that are produced from milk of cows, goats, sheep, and other mammals. Variations of dairy products include milk, cheese, butter, yogurt, cream, ice cream, and whey, among others. Synonyms for dairy products include lactose products, dairy foods, dairy produce, concentrated dairy, and milk products. Other commonly used words for dairy products are dairy-based products, milk-based goods, and cow-based foods. Many of these products provide an excellent source of calcium and protein, but some people may have dietary restrictions or allergies which make it important to confirm the products' contents before consuming them.