gamma-sitosterol is a naturally occurring plant steroid isolatable from plants of the genus Lagerstroemia. Gamma-sitosterol is a potent inhibitor of the complement component C1 complex, and it has demonstrated potential as a diabetic treatment in rats. Gamma-sitosterol is a stereoisomer of beta-sitosterol, which sees wide use as an over the counter natural supplement. However, plant extracts containing gamma-sitosterol have demonstrated toxicity on in-vitro human cell assays; which may discourage use as a natural supplement.

Epipinoresinol is an important component of the medicinal herb Eucommia ulmoides, which has a substantial reputation as an effective antihypertensive remedy. Epipinoresinol (EPR) belongs to the group of furofuran-type lignans consisting of two phenylpropane units. (+)-epipinoresinol exhibited antiplatelet aggregation activity. It also exhibited inhibitory effects on nitric oxide production. Epipinoresinol possess antiproliferative activity.