This document defines dietary supplements and protein supplements. It states that dietary supplements contain vitamins, minerals, herbs or other botanicals, amino acids, or other dietary ingredients. Protein supplements specifically are used to help people meet their daily protein intake needs and support goals like muscle building. The document discusses different types of protein supplements and sources of protein, as well as the benefits of taking protein supplements and how they can help with muscle growth when consumed at the right times, such as before and after workouts. Potential side effects of high protein intake are also mentioned.