CAT and psoriasis: At the same time, in a study by Abdel-Mawla et al. [48], a therapy using a mixture of antioxidants (100 μg selenium + 1500 IU vitamin A + 90 mg vitamin C + 30 mg vitamin E) administered orally in the form of pills to psoriasis patients proved ineffective when compared to patients not receiving antioxidants as it failed to improve their antioxidative parameters (MDA, SOD, CAT) and skin condition.