Antioxidant supplementation resulted in a significant decrease ( P < 0.05 ) in blood trough CsA by 24 % ( mean + / - SD , pre - 127.3 + / -38.9 , post - 97.2 + / -30.7 microg/ml ) compared with no change while taking the placebo ( pre - 132.2 + / -50.6 , post - 138.6 + / -56.0 microg/ml ) .
