Pine Bark Extract (Pycnogenol) for Blood Pressure Regulation

Research suggests that pine bark extract (Pycnogenol) may support blood pressure regulation, with reviews and a broad 2024 compilation of 39 randomized, double-blind, placebo-controlled trials involving over 2,000 participants reporting beneficial cardiovascular effects, including reductions in blood pressure among those with mild to moderate hypertension. Studies indicate the proposed mechanisms involve antioxidant activity, anti-inflammatory effects, and improved blood vessel function, and a 2022 review further positions the extract as a dietary option for counterbalancing inflammatory processes relevant to hypertension. However, a 2020 Cochrane-style systematic review pooling data from 27 randomized controlled trials rated the overall certainty of evidence for pine bark extract across multiple chronic conditions — including cardiovascular outcomes — as "very low," citing small trial sizes, inconsistent outcome measures, and poor reporting as significant limitations. Taken together, the existing research trends in a supportive direction but does not yet provide the high-quality, consistent evidence needed to draw firm conclusions about the extract's effectiveness for blood pressure regulation.