Effect of supplementation of chromium dinicocysteinate (CDNC), chromium dinicotinate (CDN), chromium picolinate (CP), or L-cysteine (LC) on blood glucose (a) and glycated hemoglobin (b) levels in ZDF rats. Values are Mean±SE. Rats were supplemented with saline (D, control (n=18), CDNC (n=12), CDN (n=12), CP (n=12) or LC (n=11) by gavages daily for 8 wks. BL (n=12): baseline value before the start of supplementation. Differences between values marked * versus**, **versus# are significant (p<0.05).