Start feeling better in 14 days or less. SierraSil Joint Formula14TM contains SierraSil, a pure, all natural mineral powder with essential minerals including calcium, iron, silicon, potassium, magnesium, manganese, copper and zinc. Research shows SierraSil Joint Formula14TM eases joint and muscle aches, reduces stiffness and helps prevent cartilage breakdown. SierraSil Joint Formula14TM has health promoting and detoxifying properties because of its rich clay mineral structure. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.