This combination is recommended by Matthew Wood for all musculoskeletal issues. It helps with issues of calcification, decalcification, tendons, sinews, attachments, scar tissue and more. The Solomon's Seal will also reduce inflammation and help the body regain a state of fulcrum - meaning that if a tendon is too loose, it will tighten it and if it is too tight, it will loosen it. Horsetail anchors calcium into the bones and nourishes the cartilage all while strengthening all the "tubes" in our body, from our bladder to our nerve sheaths. I added Marshmallow Root to soothe tissues and also support joints by replenishing the synovial fluids and cartilage.