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.

Group	Placebo ()	Vitamin C ()	value
Vitamin C concentration
Before surgery			0.55
End of surgery			0.03
Frequency of rescue analgesia			0.00

Data are shown as mean ± standard deviation.