Clinical trials are currently lacking, with most of the findings on ferulic acid's potential health benefits coming from animal-based research and laboratory experiments.
While relatively few studies have tested ferulic acid's effects on skin, there's some evidence that applying this it may have some protective effects. In a small study published in the Journal of Cosmetic Dermatology in 2008, for example, an experiment involving 10 healthy volunteers demonstrated that a topical antioxidant mixture consisting of vitamin C, ferulic acid, and phloretin (a compound found naturally in apples) helped shield skin from the harmful effects of exposure to the sun's ultraviolet rays.
Additionally, a preliminary study published in the Journal of Investigative Dermatology in 2005 found that a mixture of ferulic acid, vitamin C, and vitamin E may help fight sun-induced damage to the skin by reducing oxidative stress.
High Blood Pressure Management
Ferulic acid may help lower blood pressure, according to a 2002 study from the American Journal of Hypertension. In tests on rats, scientists discovered that ferulic acid helped bring blood pressure down by promoting widening of the blood vessels.
In a more recent study (published in the Journal of Cardiovascular Pharmacology in 2013), researchers observed that treatment with ferulic acid improved the structure and function of the heart, blood vessels, liver, and kidneys in rats with high blood pressure.
A study published in Phytotherapy Research in 2004 indicates that ferulic acid may help with diabetes control. After treating diabetic rats with ferulic acid, the study's authors found that the compound enhanced the animals' antioxidant capacity and helped regulate their blood sugar levels.
In addition, a 2012 study from the European Journal of Pharmacology found that a combination of ferulic acid and resveratrol helped alleviate damage to the liver, kidney, and pancreas in diabetic mice, possibly by reducing inflammation.