Dietary Supplement. Extreme Muscle Defining Formula. Rapid water loss; Beneficial to men and women; All natural. Xpel is an extremely powerful herbal diuretic designed to help the body dramatically eliminate excess water retention from beneath the skin. This maximum strength botanical formula also supplies the proper balance of vital electrolytes, which can help maintain muscle performance and muscle fullness. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)