Vitamins are essential micronutrients that the body needs to perform a variety of normal functions. They are grouped into water-soluble and fat-soluble families, and each group has distinct patterns of absorption, storage, and excretion. In general, vitamins act as cofactors and coenzymes that support metabolic processes, help maintain cellular function, and enable a range of everyday physiological activities. How vitamins work in the body is influenced by their form and how they are taken. Absorption occurs in the digestive tract, followed by transport through the bloodstream to where they are needed. Fat-soluble vitamins tend to be stored in tissues, while water-soluble vitamins are typically excreted more quickly. Supplement formats vary, including capsules, tablets, softgels, liquids, and sublingual options, with different sensory and dosing characteristics to fit personal preferences. When it comes to taking vitamins, start with clear, transparent labeling. Look for the specific vitamin name and the form, as well as the dosage and the percentage of daily value or recommended intake. Be mindful of upper intake levels and the potential for overlap if multiple products are used. If you have medical conditions or take medications, seeking guidance from a healthcare professional can help you plan safely. Choosing products with third-party verification can also support confidence in labeling and quality. Practical tips you can start today include establishing a simple routine that fits your daily habits, such as taking vitamins at a consistent time each day and pairing reminders with your usual activities. Store bottles in a cool, dry place and out of reach of children, and keep product information handy for quick reference. If trying a new vitamin for the first time, consider starting with one product and monitoring how it feels before adding others.