Why are drugs like Dipperam in the pharmacy market?

Are you sure that dipperam is involved? In the registered materials about this drug, I do not find information that it causes skin cancer. Side effects from the skin may appear, but they are not frequent. Perhaps you mean the drug Dipperam HCT - this preparation additionally contains hydrochlorothiazide. However, for this product, there is no information that it "causes cancer", but that it increases the risk of non-melanoma skin malignancies - basal cell carcinoma and squamous cell carcinoma under conditions of increasing combined exposure of the body to hydrochlorothiazide. It is believed that in the mechanism of development of these complications may play a role photosensitizing properties of hydrochlorothiazide. This phenomenon can and should be minimized by limiting exposure to sunlight and UV radiation, i.e. appropriate clothing and the use of sunscreen. Any medication may or may not cause side effects. If the potential risks associated with their occurrence in the case of the drug prescribed to you are unacceptable to you, it is best to talk about it with your doctor. On the other hand, by resigning from hypertension therapy or conducting this therapy, you significantly risk the occurrence of cardiovascular complications. I enclose additional information: https://www.gdziepolek.pl/artykuly/czy-bac-sie-dzialan-niepozadanych-lekow