741 Iron Tonic is a blackberry-fruit syrup with iron and high silica content. The syrup is blended with ginger, oat straw and yellow dock - three famous blood-enriching silica and iron herbs. Both iron and silica are the prime minerals for good blood and cell tissue building! Contains deep sea Chondrus crispus (Carrageen) - rich in many of the sea's nutrient minerals for good health.