Whey protein powder is a high quality supplement derived from milk's liquid portion after cheese production. It’s a complete protein, containing all nine essential amino acids. The process involves curdling milk with enzymes to separate the liquid whey from the solid curds, then filtering and drying it into powder. There are two main types: whey isolate, with higher protein content, and whey concentrate, which offers a more balanced nutritional profile.

Whey protein is naturally gluten-free, as it comes from milk during cheese production. However, some whey protein powders, especially those for muscle building, may contain added ingredients like flavourings or thickeners that could include gluten. To ensure a whey protein powder is gluten free, always check the ingredients list.

Mixing creatine with whey protein is a great way to take both supplements. Creatine boosts strength, while whey protein supplies essential amino acids for muscle recovery and growth.

Whey protein can contribute to acne in some individuals, particularly those prone to it. This is due to whey protein's ability to increase insulin-like growth factor 1 (IGF-1) and androgen levels, which can stimulate excess oil production, clog pores and trigger inflammation; both of these are common factors in acne.