Healthcare supplements are formulated to complement a healthy lifestyle by providing essential nutrients that might be lacking in one's diet. They come in various forms such as capsules, tablets, powders, and liquids, catering to different preferences and needs. These supplements often contain vitamins like A, C, D, E, and K, essential minerals like calcium, magnesium, zinc, and iron, as well as other substances like probiotics, omega-3 fatty acids, and herbal extracts.