There was no biochemical ADRs on liver, kidney, or glucose markers (See Figure 1). There were no statistically significant self-reported ADRs versus placebo (see Table 2). There were no major ADRs (e.g., hospitalization, new-onset disease, infection, or death).
pterostilbene 50 mg twice daily or pterostilbene 50 mg + grape extract (GE) 100 mg twice daily  
matching placebo twice daily for 6–8 weeks.
BUN