Variables

Base line

2weeks

4weeks

6weeks

8weeks

G1/Silymarin

19.57+7.68

16.93+6.7

14.21+5.85

11.64+5.42*

9.14+4.75*

G2/N-Acetylcysteine

19.07+6.6

16.71+5.65

14.0+4.88

11.64+4.05*

9.5+3.59*

G3/Selenium

18.86+8.12

17.14+7.66

15.0+7.26

13.43+6.89

11.93+6.83

G4/placebo

19.28 ± 9.29

18.71 ± 9.381

18 ± 8.72

17.64 ± 8.67

17.14 ± 8.77

Results represent mean ± Standard deviation *Represents significant change P≤0.05 between treatment groups vs. placebo
Table 3: Effects of Silymarin, N-Acetylcysteine and Selenium on the number of inflammatory lesions on half - face of patients with acne compared to placebo after eight weeks.