Prenatal DHA Smart Essentials 250 mg 60 Sgels - Rainbow Light Prenatal DHA Smart Essentials is a once-a-day supplement that is a brain-supporting blend! This formula has optimal potency when combined with average daily dietary intake and exceptional purity! This blend is molecularly distilled to remove any contaminants including heavy metals and other impurities. Also, Rainbow Light has added orange essential oil to eliminate "fishy" aftertaste and stimulate digestion!