The activities of coenzyme Q10 and vitamin B6 for immune responses.

Coenzyme Q10 (CoQ10) and vitamin B6 (pyridoxine) have been administered together and separately to three groups of human subjects. The blood levels of CoQ10 increased (p < 0.001) when CoQ10 and pyridoxine were administered together and when CoQ10 was given alone. The blood levels of IgG increased when CoQ10 and pyridoxine were administered together (p < 0.01) and when CoQ10 was administered alone (p < 0.05). The blood levels of T4-lymphocytes increased when CoQ10 and pyridoxine were administered together (p < 0.01) and separately (p < 0.001). The ratio of T4/T8 lymphocytes increased when CoQ10 and pyridoxine were administered together (p < 0.001) and separately (p < 0.05). These increases in IgG and T4-lymphocytes with CoQ10 and vitamin B6 are clinically important for trials on AIDS, other infectious diseases, and on cancer.