High Polyphenol Olive Oil: Complete Buying Guide & Top Brands Compared

This buying guide for high polyphenol olive oil in 2025 highlights the importance of testing methods, brand transparency, and packaging innovation. Brands using NMR testing typically report polyphenol levels up to 60% higher than HPLC & LC-MS/MS methods. Only HPLC and LC-MS/MS testing meet EU regulatory standards for health claims. The guide compares 10 brands on verified polyphenol content, transparency, packaging, and price per milligram of actual polyphenols.