Look for brands that use pure, certified organic Maca that is grown traditionally in the Peruvian highlands. Make sure that only the root of the Maca plant is used, as this is where the medicinal value resides. For best results, choose gelatinized Maca for greater potency and optimal absorption. Gelatinization is an extrusion process that removes the starch from the root leaving a more concentrated powder that is easier to digest. Maca is available in powder, tablets, and capsules. Powder is the most economical form and tablets and capsules are the most convenient.