Göransson K, Lidén S, Odsell L.
In a double-blind investigation of 54 patients suffering from acne vulgaris, the effect of 0.6 g of oral zinc sulphate daily versus placebo was studied. During the active treatment period of 6 weeks, the acne improved by about one-third, as rated with a score system. Clinical comparison with placebo showed the result of zinc sulphate therapy to be slightly, but statistically significantly better. ...
Pages: 443-448