Firstwell deep-sea fish oil is extracted from deep-sea fish in the Pacific Ocean. Because of the low pollution in the deep-sea, fish can grow healthily and naturally, so it has more nutritional value. Firstwell's deep-sea fish oil is refined and concentrated by multiple technologies, which eliminates pollutants and impurities, and does not destroy the fish oil composition. The content of Omega-3 fatty acids/EPA/DHA is extremely high. "Pacific Ocean Fish Oil" is the best guarantee for quality and efficacy.