Effects on WBC count: Mean total white blood cell count (WBC) increased (10.7%) significantly (P = 0.029) in the horses after 5 days of treatment from a mean of 6.95 X 106 cells/µL to 7.69 X 106 cells/µL (Figure 1). This was likely due to an increase in the lymphocyte (LYM) count, as there was a trend toward the increase (P = 0.0679) in lymphocyte count after 5 days of supplementation (Figure 2). OxyNu stimulated an increase in WBC and lymphocyte counts, which might effectively improve immune function and help fight infections, especially viral infections.