MD-MUSCLE is a sterile, professional-use injectable collagen medical device designed to support muscle function and comfort as part of musculoskeletal and postural therapy. Formulated with porcine-origin type I collagen (tropocollagen) and Hypericum (St. John’s Wort), it is used to help relieve muscle tension and localised discomfort, reduce stiffness, and support improved mobility and flexibility in overworked or strained areas. By supporting connective tissue and microcirculation within muscle and fascia, MD-MUSCLE may assist functional recovery and help restore a more balanced muscle tone.