Pathology General fdfd1e94 Which of the following is not a vasodilator? A PGI2 B Lipoxin C Leukotriene C4 D PGE2 High-Yield Explanation Thromboxane A2, Leukotrienes C4, D4, E4 are vasoconstrictors. PGI2, PGE1, PGE2, PGD2 and lipoxins are vasodilators.Ref: Robbins Basic Pathology, 7th Edition, Page 48.