Generic medicines contain exactly the same active ingredient as is contained in the well-known brand medicines. The developing pharmaceutical company can hold its exclusive patent rights. They may then make the medicine the only company after 20 years of discovery. After the end of this patent protection, other companies may also manufacture the medicine with the same active ingredient. In the overwhelming number of cases generics are as good as branded products. However, they are considerably cheaper. The reason for this is that the research and advertising costs for generic medicines are much lower. And with the same active ingredients and therefore also the same effect. Many health insurance companies place great value on the fact that nowadays the generic version of a medicine is prescribed as long as it is medically necessary and safe.