Hypersensitivity, pregnancy, the period of breastfeeding, the period of newborns (up to 4 weeks), oppression of bone marrow hematopoiesis, acute intermittent porphyria, deficiency of glucose-6-phosphate dehydrogenase, hepatic and / or renal failure, skin diseases (fungal lesions, psoriasis, eczema), I phase of wound process (due to lack of osmotic activity).