The card does not explain why the 5000 IU dose was chosen, and it does not compare it with lower ones. It states that 1 tablet contains 5000 IU of vitamin D3 and that the pack holds 60 tablets; the recommended daily amount and the method of use are given on the packaging. Do not exceed the recommended daily amount.
General information (not a manufacturer's instruction): 5000 IU in one tablet is a high dose, so it is better to agree on its use with a doctor, especially for long-term use.