Yes. Rosita has had positive comments regarding the authenticity of their Extra Virgin Cod Liver Oil from a variety of Marine Specialists. Rosita is the only producer of GENUINE Extra Virgin Cod Liver Oil. Even if a cold extraction procedure is used to produce a cod liver oil, a heat associated method is still required to purify the oil of contaminants. However, Rosita is the only company using a heat free and chemical free 100% Natural Cleaning Method. This unique Patented method makes use of a substance naturally occurring in the ocean that has the ability to attract and bind to contaminants like a magnet. This substance, together with its bound contaminants, can then be gently removed from the oil rather in a similar way that sediments are removed from a fine wine.