“…Generally, cinnamic acid is composed of simple derivatives, including ferulic acid and p -coumaric acid, and is widely found in plants, including vegetables, fruits, whole grains, and honey [ 125 ]. Past studies have reported that cinnamic acid exhibits a neuroprotective effect [ 126 ], antioxidant [ 127 ], and anti-inflammatory properties [ 128 ]. When utilized in clinical practice, the administration of this compound alone recorded a low bioavailability, which restricts further development in clinical usages for AD [ 125 ].…”