Whey protein concentrate contains on average 70-80% protein, with a slightly higher content of carbohydrates and fats. Whey protein isolate is further filtered and usually contains more than 90% protein. Concentrate retains more of the natural milk composition.

Yes, since it is a whey protein concentrate, it still contains a small amount of lactose. This is a natural component of milk.

Amino acids are the building blocks of proteins. Every protein consists of a chain of amino acids in a specific order. These chains are broken down by the body into individual amino acids, which are then used in various ways in your diet.

The protein contains both essential and non-essential amino acids, including leucine, isoleucine, valine, lysine and glutamic acid. These are naturally present in the protein in bound form, as part of the protein structure. No free amino acids have been added.

Essential amino acids are amino acids that must be supplied through the diet. Non-essential amino acids are also present in food, but are often considered less important as supplements. Both types are found in a complete protein such as whey protein isolate.

A complete protein contains all nine essential amino acids in relevant proportions. Whey protein is known as a complete protein of high biological value.

Animal proteins such as whey usually contain all essential amino acids in optimal proportions. Many plant sources contain fewer or less balanced amounts, unless combined.