SunButyrateâ¢- Convenient, great-tasting liquid in a natural blueberry-vanilla flavor. TG liquid delivers butyrate, which is the principal energy source for the cells lining the GI tract, directly to the intestine for improved bioavailability. It supports GI cell health and protects epithelial barrier integrity by maintaining tight junctions. It Moderates intestinal cytokine expression and production. It supports abdominal comfort by regulating bowel motility.