The highest quality oil comes from the extraction method, using liquid carbon dioxide and ultra-high pressure to extract the oil from the berries. According to Dr. Moerck, supercritical CO2 extraction is the cleanest extraction method known today, aside from eating the food whole. And, the higher the pressure used, the more micronutrients are left in the oil, such as lutein, lycopene, zeaxanthin, and chlorophyll.
There are a number of nutrients that have been used traditionally. One of them is organic pumpkin seed oil, which is a good nutrient It's slightly less effective than saw palmetto because it is a different mechanism of action. However, when buying a combination product, beware that saw palmetto oil is far more expensive than pumpkin seed oil. Some supplements will therefore contain mostly pumpkin seed oil and very little saw palmetto oil, resulting in a less effective product. Remember the threshold of what you want, as far as a daily dose, is a minimum of 320 mg of the saw palmetto oil.