Nutritional supplements are products designed to provide essential nutrients that may be missing from a person's diet. They can include vitamins, minerals, amino acids, and herbal extracts, and are available in various forms such as tablets, capsules, powders, and liquids. Many people use these supplements to support their overall health, boost energy levels, or address specific nutritional deficiencies. While nutritional supplements can be beneficial, they should not replace a balanced diet rich in whole foods like fruits, vegetables, and grains. It's important to consult with a healthcare professional before starting any supplement regimen, as excessive intake can lead to adverse effects or interactions with medications.