Gain inspiration by reading testimonials from health professionals, professional athletes, and your every day active person. SierraSil® is clinically validated, making it a recognized safe and effective product by Doctors. Research shows that SierraSil® eases joint and muscle aches, reduces stiffness and helps prevent cartilage breakdown associated with exercise and movement. Professional athletes enjoy reduced recovery time and being on top of their game. SierraSil® has helped athletes with their recovery from sports related injuries.