Product Name: Maca Powder,Maca Root Powder Place of Origin: Yunnan Province,China Part of Used: Root Appearance: Brown Fine Powder, no lumps, no visible impurities Production Method: SD(Spray Drying) Specification: 50-400mesh according to customer requests Product Introduction of Maca� Powder: Maca is consumed as food for humans and livestock, suggesting any risk from consumption is rather minimal. It is considered as safe to eat as any other vegetable food. However, maca does contain glucosinolates, which can causegoiters when high consumption is combined with a diet low in iodine. This being said, darker colored maca roots (red, purple, black) contain significant amounts of natural iodine, a 10-gram serving of dried maca generally containing 52g of iodine. Though this is common in other foods with high levels of glucosinolate, it is uncertain if maca consumption can cause or worsen a goiter.