When it comes to dietary supplements, the term "premium" means minimally or carefully processed ingredients of high nutritional value.  The "label" also indicates that the manufacturer follows specific processing standards and that the ingredients are certified to meet quality indicators related to potency, bioavailability and more. Here's a list of key attributes that I looked for to conduct this review. Of course, not all attributes apply to every product. For example, whey protein is, by definition, not paleo-compatible because dairy is not allowed on the paleo diet: - Grass-fed or pasture-raised - Non-GMO - Paleo-friendly - Keto-friendly - No artificial ingredients - Sugar-free - Gluten-free - Growth-hormone-free - GMP certified - Third-party tested - Free of heavy metals (important for certain protein sources, including rice)