SierraSil joint formula14 - supports joint health and function. Start feeling better in 14 days or less. Sierrasil joint formula14 contains sierrasil, a pure mineral powder with essential minerals including calcium, iron, silicon, potassium, magnesium, manganese, copper and zinc. Research shows sierrasil joint formula14 supports joint, cartilage and muscle function. Sierrasil joint formula 14 supports gentle detoxification because of its clay mineral structure. Includes 180 capsules per bottle.