Zygel is a clear gel formulation of CBD designed for transdermal administration The Food and Drug Administration (FDA) has granted Fast Track designation to Zygel (ZYN002; Zynerba), a cannabidiol gel for the treatment of behavioral symptoms associated with Fragile X syndrome (FXS). CBD Gel Gets Fast Tracked for Behavioral Symptoms Associated ... www.empr.com/home/news/drugs-in-the-pipeline/cbd-gel-gets-fast-tracked-for-behavioral-symptoms-associated-with-fragile-x-syndrome/