Pain Research and Management / 2016 / Article / Tab 2

Clinical Study

Effect of Intravenous High Dose Vitamin C on Postoperative Pain and Morphine Use after Laparoscopic Colectomy: A Randomized Controlled Trial

Table 2

Plasma vitamin C concentrations (μmol/L) and frequency of postoperative rescue analgesics.

GroupPlacebo ()Vitamin C () value

Vitamin C concentration
 Before surgery0.55
 End of surgery0.03
Frequency of rescue analgesia0.00

Data are shown as mean ± standard deviation.