Red raspberry powder is dried, concentrated raspberry in a convenient form. You get the fruit's nutrients and polyphenols without fresh berries. People use it mainly for antioxidant support and overall wellness, not for a specific effect. Stir it into smoothies, yogurt, oatmeal, or water as a daily boost.
Its high fiber content can cause mild digestive upset if you take too much too quickly. Introduce it slowly to see how your body responds.