Aquaviron Steroid Injection (ASI) is a natural alternative to injectable steroids. ASI is a safe and effective way to treat muscle pain and inflammation. It contains no harmful side effects and is completely non-toxic. It works by releasing naturally occurring compounds called glucocorticoids into the body. These glucocorticoids work by binding to receptors in the brain and spinal cord, causing them to relax. This results in reduced muscle tension and pain relief.